diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b3820cb..eb72bab 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -242,9 +242,9 @@ jobs:
           make PAWPAW_TARGET=${{ matrix.target }}
       - name: Validate plugins
         if: false
-        #if: steps.cache.outputs.cache-hit == 'true'
+        if: steps.cache.outputs.cache-hit == 'true'
         run: |
-          # ./utils/plugin-builder/validate-plugins.sh ${{ matrix.target }}
+          ./utils/plugin-builder/validate-plugins.sh ${{ matrix.target }}
           # FIXME dirty carla leaves temp folders around
           rm -rf *.tmp
       - name: Set version tag for release
diff --git a/src/PawPaw b/src/PawPaw
index 43cc25c..6250a88 160000
--- a/src/PawPaw
+++ b/src/PawPaw
@@ -1 +1 @@
-Subproject commit 43cc25c79cac4525cf07e1aaad82ae395c436883
+Subproject commit 6250a88ce79a67ebb67ef72b62593684cea336ea
diff --git a/src/mod-host b/src/mod-host
index c6a567c..7d0b7a2 160000
--- a/src/mod-host
+++ b/src/mod-host
@@ -1 +1 @@
-Subproject commit c6a567c36afe6aa59a19884580c54ccfc20c898d
+Subproject commit 7d0b7a2d7d58df3068eecfcf2594d4524b9ebeb6
diff --git a/src/plugin/ChildProcess.hpp b/src/plugin/ChildProcess.hpp
index 33983a8..6b771f1 100644
--- a/src/plugin/ChildProcess.hpp
+++ b/src/plugin/ChildProcess.hpp
@@ -86,7 +86,7 @@ class ChildProcess
                               nullptr,    // lpProcessAttributes
                               nullptr,    // lpThreadAttributes
                               TRUE,       // bInheritHandles
-                              /* CREATE_NO_WINDOW | */ CREATE_UNICODE_ENVIRONMENT, // dwCreationFlags
+                              CREATE_NO_WINDOW | CREATE_UNICODE_ENVIRONMENT, // dwCreationFlags
                               const_cast<LPWSTR>(envp), // lpEnvironment
                               nullptr,    // lpCurrentDirectory
                               &si,        // lpStartupInfo
diff --git a/src/plugin/DesktopPlugin.cpp b/src/plugin/DesktopPlugin.cpp
index c15c05f..c19cd66 100644
--- a/src/plugin/DesktopPlugin.cpp
+++ b/src/plugin/DesktopPlugin.cpp
@@ -19,6 +19,7 @@ class DesktopPlugin : public Plugin,
     ChildProcess jackd;
     ChildProcess mod_ui;
     SharedMemory shm;
+    String currentPedalboard;
     bool startingJackd = false;
     bool startingModUI = false;
     bool processing = false;
@@ -28,7 +29,7 @@ class DesktopPlugin : public Plugin,
     float* tmpBuffers[2] = {};
     uint32_t numFramesInShmBuffer = 0;
     uint32_t numFramesInTmpBuffer = 0;
-    uint portBaseNum = 0;
+    int portBaseNum = 0;
 
    #ifdef DISTRHO_OS_WINDOWS
     const WCHAR* envp;
@@ -38,11 +39,14 @@ class DesktopPlugin : public Plugin,
 
 public:
     DesktopPlugin()
-        : Plugin(kParameterCount, 0, 0),
+        : Plugin(kParameterCount, 0, 1),
           envp(nullptr)
     {
         if (isDummyInstance())
+        {
+            portBaseNum = -kErrorUndefined;
             return;
+        }
 
         // TODO check available ports
         static int port = 1;
@@ -53,7 +57,7 @@ class DesktopPlugin : public Plugin,
 
         if (envp == nullptr)
         {
-            parameters[kParameterBasePortNumber] = -kErrorAppDirNotFound;
+            parameters[kParameterBasePortNumber] = portBaseNum = -kErrorAppDirNotFound;
             return;
         }
 
@@ -67,11 +71,13 @@ class DesktopPlugin : public Plugin,
         stopRunner();
 
         if (processing && jackd.isRunning())
+        {
+            processing = false;
             shm.stopWait();
+        }
 
         jackd.stop();
         mod_ui.stop();
-
         shm.deinit();
 
         delete[] tmpBuffers[0];
@@ -100,12 +106,18 @@ class DesktopPlugin : public Plugin,
         #define APP_EXT ""
        #endif
 
+        if (shm.data == nullptr && ! shm.init())
+        {
+            parameters[kParameterBasePortNumber] = portBaseNum = -kErrorShmSetupFailed;
+            return false;
+        }
+
         if (! jackd.isRunning())
         {
             if (startingJackd)
             {
                 startingJackd = false;
-                parameters[kParameterBasePortNumber] = -kErrorJackdExecFailed;
+                parameters[kParameterBasePortNumber] = portBaseNum = -kErrorJackdExecFailed;
                 return false;
             }
 
@@ -130,7 +142,7 @@ class DesktopPlugin : public Plugin,
             if (jackd.start(jackd_args, envp))
                 return true;
 
-            parameters[kParameterBasePortNumber] = -kErrorJackdExecFailed;
+            parameters[kParameterBasePortNumber] = portBaseNum = -kErrorJackdExecFailed;
             return false;
         }
 
@@ -149,7 +161,7 @@ class DesktopPlugin : public Plugin,
             if (startingModUI)
             {
                 startingModUI = false;
-                parameters[kParameterBasePortNumber] = -kErrorModUiExecFailed;
+                parameters[kParameterBasePortNumber] = portBaseNum = -kErrorModUiExecFailed;
                 return false;
             }
 
@@ -165,7 +177,7 @@ class DesktopPlugin : public Plugin,
             if (mod_ui.start(mod_ui_args, envp))
                 return true;
 
-            parameters[kParameterBasePortNumber] = -kErrorModUiExecFailed;
+            parameters[kParameterBasePortNumber] = portBaseNum = -kErrorModUiExecFailed;
             return false;
         }
 
@@ -225,6 +237,7 @@ class DesktopPlugin : public Plugin,
     */
     uint32_t getVersion() const override
     {
+        // return d_version(VERSION[0]-'0', VERSION[2]-'0', VERSION[4]-'0');
         return d_version(1, 0, 0);
     }
 
@@ -267,9 +280,12 @@ class DesktopPlugin : public Plugin,
       Set a state key and default value.
       This function will be called once, shortly after the plugin is created.
     */
-    void initState(uint32_t, String&, String&) override
+    void initState(uint32_t, State& state) override
     {
-        // we are using states but don't want them saved in the host
+        state.hints = kStateIsFilenamePath | kStateIsOnlyForDSP;
+        state.key = "pedalboard";
+        state.defaultValue = "";
+        state.label = "Pedalboard";
     }
 
    /* --------------------------------------------------------------------------------------------------------
@@ -291,11 +307,25 @@ class DesktopPlugin : public Plugin,
         // parameters[index] = value;
     }
 
+   /**
+      Get the value of an internal state.
+      The host may call this function from any non-realtime context.
+    */
+    String getState(const char* const key) const override
+    {
+        if (std::strcmp(key, "pedalboard") == 0)
+            return currentPedalboard;
+
+        return String();
+    }
+
    /**
       Change an internal state.
     */
-    void setState(const char*, const char*) override
+    void setState(const char* const key, const char* const value) override
     {
+        if (std::strcmp(key, "pedalboard") == 0)
+            currentPedalboard = value;
     }
 
    /* --------------------------------------------------------------------------------------------------------
@@ -307,7 +337,7 @@ class DesktopPlugin : public Plugin,
         {
             firstTimeActivating = false;
 
-            if (envp != nullptr && shm.init() && run())
+            if (run())
                 startRunner(500);
         }
         else
@@ -315,6 +345,7 @@ class DesktopPlugin : public Plugin,
             shm.reset();
         }
 
+        firstTimeProcessing = true;
         numFramesInShmBuffer = numFramesInTmpBuffer = 0;
     }
 
@@ -513,14 +544,21 @@ class DesktopPlugin : public Plugin,
 
     void sampleRateChanged(double) override
     {
-        if (jackd.isRunning())
-        {
-            stopRunner();
-            jackd.stop();
+        if (portBaseNum < 0 || shm.data == nullptr)
+            return;
 
-            if (run())
-                startRunner(500);
+        stopRunner();
+
+        if (processing && jackd.isRunning())
+        {
+            processing = false;
+            shm.stopWait();
         }
+
+        jackd.stop();
+        shm.deinit();
+
+        firstTimeActivating = true;
     }
 
     // -------------------------------------------------------------------------------------------------------
diff --git a/src/plugin/DesktopUI.cpp b/src/plugin/DesktopUI.cpp
index 3158eef..a5580b7 100644
--- a/src/plugin/DesktopUI.cpp
+++ b/src/plugin/DesktopUI.cpp
@@ -41,18 +41,19 @@ class DesktopUI : public UI,
         buttonRefresh.setAbsolutePos(2 * scaleFactor, 2 * scaleFactor);
         buttonRefresh.setSize(70 * scaleFactor, 26 * scaleFactor);
 
-        buttonOpenWebGui.setId(2);
-        buttonOpenWebGui.setLabel("Open in Web Browser");
-        buttonOpenWebGui.setFontScale(scaleFactor);
-        buttonOpenWebGui.setAbsolutePos(74 * scaleFactor, 2 * scaleFactor);
-        buttonOpenWebGui.setSize(150 * scaleFactor, 26 * scaleFactor);
-
-        buttonOpenUserFilesDir.setId(3);
+        buttonOpenUserFilesDir.setId(2);
         buttonOpenUserFilesDir.setLabel("Open User Files Dir");
         buttonOpenUserFilesDir.setFontScale(scaleFactor);
-        buttonOpenUserFilesDir.setAbsolutePos(226 * scaleFactor, 2 * scaleFactor);
+        buttonOpenUserFilesDir.setAbsolutePos(74 * scaleFactor, 2 * scaleFactor);
         buttonOpenUserFilesDir.setSize(140 * scaleFactor, 26 * scaleFactor);
 
+        buttonOpenWebGui.setId(3);
+        buttonOpenWebGui.setLabel("Open in Web Browser");
+        buttonOpenWebGui.setFontScale(scaleFactor);
+        buttonOpenWebGui.setAbsolutePos(216 * scaleFactor, 2 * scaleFactor);
+        buttonOpenWebGui.setSize(150 * scaleFactor, 26 * scaleFactor);
+        buttonOpenWebGui.hide();
+
         label = "MOD Desktop ";
         label += getPluginFormatName();
         label += " v" VERSION;
@@ -92,6 +93,13 @@ class DesktopUI : public UI,
 
             if (value < 0.f)
             {
+                if (webview != nullptr)
+                {
+                    destroyWebView(webview);
+                    webview = nullptr;
+                    buttonOpenWebGui.hide();
+                }
+
                 switch (-d_roundToIntNegative(value))
                 {
                 case kErrorAppDirNotFound:
@@ -106,11 +114,16 @@ class DesktopUI : public UI,
                     error = "Error: Failed to start mod-ui";
                     errorDetail = "";
                     break;
+                case kErrorShmSetupFailed:
+                    error = "Error initializing MOD Desktop plugin";
+                    errorDetail = "Shared memory setup failed";
+                    break;
                 case kErrorUndefined:
                     error = "Error initializing MOD Desktop plugin";
                     errorDetail = "";
                     break;
                 }
+
                 repaint();
                 return;
             }
@@ -126,13 +139,20 @@ class DesktopUI : public UI,
             {
                 destroyWebView(webview);
                 webview = nullptr;
+
+                buttonOpenWebGui.hide();
+                repaint();
             }
 
             port = d_roundToUnsignedInt(value);
             DISTRHO_SAFE_ASSERT_RETURN(port != 0,);
 
             port += kPortNumOffset;
+            d_stderr("webview port is %d", port);
             webview = addWebView(getWindow().getNativeWindowHandle(), getScaleFactor(), port);
+
+            buttonOpenWebGui.show();
+            repaint();
         }
     }
 
@@ -182,10 +202,10 @@ class DesktopUI : public UI,
                 reloadWebView(webview);
             break;
         case 2:
-            openWebGui(port);
+            openUserFilesDir();
             break;
         case 3:
-            openUserFilesDir();
+            openWebGui(port);
             break;
         }
     }
diff --git a/src/plugin/DistrhoPluginInfo.h b/src/plugin/DistrhoPluginInfo.h
index 926c8be..39551c3 100644
--- a/src/plugin/DistrhoPluginInfo.h
+++ b/src/plugin/DistrhoPluginInfo.h
@@ -15,9 +15,11 @@
 #define DISTRHO_PLUGIN_IS_RT_SAFE       0
 #define DISTRHO_PLUGIN_NUM_INPUTS       2
 #define DISTRHO_PLUGIN_NUM_OUTPUTS      2
+#define DISTRHO_PLUGIN_WANT_LATENCY     1
 #define DISTRHO_PLUGIN_WANT_MIDI_INPUT  1
 #define DISTRHO_PLUGIN_WANT_MIDI_OUTPUT 1
 #define DISTRHO_PLUGIN_WANT_STATE       1
+#define DISTRHO_PLUGIN_WANT_FULL_STATE  1
 #define DISTRHO_UI_FILE_BROWSER         0
 #define DISTRHO_UI_DEFAULT_WIDTH        1170
 #define DISTRHO_UI_DEFAULT_HEIGHT       600
@@ -31,6 +33,7 @@ enum Error {
     kErrorAppDirNotFound = 1,
     kErrorJackdExecFailed,
     kErrorModUiExecFailed,
+    kErrorShmSetupFailed,
     kErrorUndefined
 };
 
diff --git a/src/plugin/Makefile b/src/plugin/Makefile
index 3f7768c..0ef829f 100644
--- a/src/plugin/Makefile
+++ b/src/plugin/Makefile
@@ -39,11 +39,12 @@ BUILD_CXX_FLAGS += -pthread
 LINK_FLAGS += -pthread
 
 ifeq ($(MACOS),true)
-LINK_FLAGS += -framework IOKit -framework WebKit
+LINK_FLAGS += -framework CoreFoundation -framework IOKit -framework WebKit
 else ifeq ($(WINDOWS),true)
 LINK_FLAGS += -lwinmm
 else ifeq ($(LINUX),true)
-BUILD_CXX_FLAGS += $(shell $(PKG_CONFIG) --cflags Qt5Core) -std=gnu++14
+BUILD_CXX_FLAGS += $(shell $(PKG_CONFIG) --cflags Qt5Core)
+# -std=gnu++14
 LINK_FLAGS += -ldl -lrt
 endif
 
diff --git a/src/plugin/SharedMemory.hpp b/src/plugin/SharedMemory.hpp
index 7601799..aee7810 100644
--- a/src/plugin/SharedMemory.hpp
+++ b/src/plugin/SharedMemory.hpp
@@ -222,6 +222,7 @@ class SharedMemory
         data->magic = 7331;
         post();
         wait();
+        data->magic = 1337;
     }
 
     bool process(float** output, const uint32_t offset)
diff --git a/src/plugin/WebViewQt.cpp b/src/plugin/WebViewQt.cpp
deleted file mode 100644
index e69de29..0000000
diff --git a/src/plugin/WebViewX11.cpp b/src/plugin/WebViewX11.cpp
index 2732df2..d785865 100644
--- a/src/plugin/WebViewX11.cpp
+++ b/src/plugin/WebViewX11.cpp
@@ -472,7 +472,6 @@ static bool qt6webengine(const Window winId, const double scaleFactor, const cha
         QWebEngineView_setUrl(webview, *qurl);
     };
 
-
     QApplication_exec();
 
     dlclose(lib);
diff --git a/src/plugin/utils.cpp b/src/plugin/utils.cpp
index 8efd8f6..aa96aa4 100644
--- a/src/plugin/utils.cpp
+++ b/src/plugin/utils.cpp
@@ -289,6 +289,7 @@ char* const* getEvironment(const uint portBaseNum)
     set_envp_value(envpl, L"LANG=en_US.UTF-8");
     set_envp_value(envpl, L"MOD_DESKTOP=1");
     set_envp_value(envpl, L"MOD_DESKTOP_PLUGIN=1");
+    set_envp_value(envpl, L"MOD_LOG=0");
     set_envp_value(envpl, L"PYTHONUNBUFFERED=1");
    #else
     while (environ[envsize] != nullptr)
@@ -306,6 +307,7 @@ char* const* getEvironment(const uint portBaseNum)
     set_envp_value(envp, "LANG=en_US.UTF-8");
     set_envp_value(envp, "MOD_DESKTOP=1");
     set_envp_value(envp, "MOD_DESKTOP_PLUGIN=1");
+    set_envp_value(envp, "MOD_LOG=0");
     set_envp_value(envp, "PYTHONUNBUFFERED=1");
    #endif
 
diff --git a/utils/debug/jackd b/utils/debug/jackd
index 8c345e3..7fc4125 100755
--- a/utils/debug/jackd
+++ b/utils/debug/jackd
@@ -60,6 +60,9 @@ else
     export LD_BIND_NOW=1
     export LD_LIBRARY_PATH="${PAWPAW_PREFIX}/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
     export JACK_DRIVER_DIR="$(pwd)/jack"
+    if [ -e "/usr/lib/x86_64-linux-gnu/pipewire-0.3/jack/libjack.so.0" ] && [ -e "/etc/ld.so.conf.d/pipewire-jack-x86_64-linux-gnu.conf" ]; then
+        export JACKBRIDGE_FILENAME="/usr/lib/x86_64-linux-gnu/pipewire-0.3/jack/libjack.so.0"
+    fi
 fi
 
 LV2_PATH="$(convert_path "${DOCS_DIR}/MOD Desktop/lv2")"