diff --git a/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java b/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java
index 04edda60..28e1b066 100644
--- a/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java
+++ b/common/src/main/java/net/neoforged/gradle/common/extensions/IdeManagementExtension.java
@@ -13,6 +13,7 @@
 import org.gradle.plugins.ide.eclipse.model.EclipseModel;
 import org.gradle.plugins.ide.idea.model.IdeaModel;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 import org.jetbrains.gradle.ext.IdeaExtPlugin;
 import org.jetbrains.gradle.ext.ProjectSettings;
 import org.jetbrains.gradle.ext.TaskTriggersConfig;
@@ -261,22 +262,30 @@ private void onCommonEclipse(final BiConsumer<Project, EclipseModel> toPerform)
             if (!isEclipseImport()) {
                 return;
             }
-            
-            //Grab the eclipse model so we can extend it. -> Done on the root project so that the model is available to all subprojects.
-            //And so that post sync tasks are only ran once for all subprojects.
-            EclipseModel model = project.getExtensions().findByType(EclipseModel.class);
-            if (model == null) {
-                model = rootProject.getExtensions().findByType(EclipseModel.class);
-                if (model == null) {
-                    return;
-                }
-            }
-            
+
+            EclipseModel model = getEclipseModel();
+            if (model == null) return;
+
             //Configure the project, passing the model and the relevant project. Which does not need to be the root, but can be.
             toPerform.accept(project, model);
         });
     }
-    
+
+    /**
+     * Get the eclipse model from the extensions project.
+     *
+     * @return the eclipse model, or {@code null} if not found
+     */
+    public @Nullable EclipseModel getEclipseModel() {
+        //Grab the eclipse model so we can extend it. -> Done on the root project so that the model is available to all subprojects.
+        //And so that post sync tasks are only ran once for all subprojects.
+        EclipseModel model = project.getExtensions().findByType(EclipseModel.class);
+        if (model == null) {
+            model = project.getRootProject().getExtensions().findByType(EclipseModel.class);
+        }
+        return model;
+    }
+
     /**
      * Applies the specified configuration action to configure gradle run projects only.
      *
diff --git a/common/src/main/java/net/neoforged/gradle/common/runs/ide/IdeRunIntegrationManager.java b/common/src/main/java/net/neoforged/gradle/common/runs/ide/IdeRunIntegrationManager.java
index a973d812..b49798d6 100644
--- a/common/src/main/java/net/neoforged/gradle/common/runs/ide/IdeRunIntegrationManager.java
+++ b/common/src/main/java/net/neoforged/gradle/common/runs/ide/IdeRunIntegrationManager.java
@@ -267,7 +267,7 @@ public void eclipse(Project project, EclipseModel eclipse) {
                         return;
 
                     final TaskProvider<?> ideBeforeRunTask = getOrCreateIdeBeforeRunTask(project, runImpl);
-                    final List<TaskProvider<?>> copyProcessResourcesTasks = createEclipseCopyResourcesTasks(eclipse, run);
+                    final List<TaskProvider<?>> copyProcessResourcesTasks = createEclipseCopyResourcesTasks(run);
                     ideBeforeRunTask.configure(task -> copyProcessResourcesTasks.forEach(task::dependsOn));
                     
                     try {
@@ -327,7 +327,7 @@ public void vscode(Project project, EclipseModel eclipse)
                     final RunImpl runImpl = (RunImpl) run;
                     final TaskProvider<?> ideBeforeRunTask = getOrCreateIdeBeforeRunTask(project, runImpl);
 
-                    final List<TaskProvider<?>> copyProcessResourcesTasks = createEclipseCopyResourcesTasks(eclipse, run);
+                    final List<TaskProvider<?>> copyProcessResourcesTasks = createEclipseCopyResourcesTasks(run);
                     ideBeforeRunTask.configure(task -> copyProcessResourcesTasks.forEach(task::dependsOn));
 
                     final LaunchConfiguration cfg = launchWriter.createGroup("NG - " + project.getName(), WritingMode.REMOVE_EXISTING)
@@ -410,7 +410,7 @@ private List<TaskProvider<?>> createIntelliJCopyResourcesTasks(Run run) {
             return intelliJResourcesTask;
         }
 
-        private List<TaskProvider<?>> createEclipseCopyResourcesTasks(EclipseModel eclipse, Run run) {
+        private List<TaskProvider<?>> createEclipseCopyResourcesTasks(Run run) {
             final List<TaskProvider<?>> copyProcessResources = new ArrayList<>();
             for (SourceSet sourceSet : run.getModSources().all().get().values()) {
                 final Project sourceSetProject = SourceSetUtils.getProject(sourceSet);
@@ -425,7 +425,7 @@ private List<TaskProvider<?>> createEclipseCopyResourcesTasks(EclipseModel eclip
                     eclipseResourcesTask = sourceSetProject.getTasks().register(taskName, Copy.class, task -> {
                         final TaskProvider<ProcessResources> defaultProcessResources = sourceSetProject.getTasks().named(sourceSet.getProcessResourcesTaskName(), ProcessResources.class);
                         task.from(defaultProcessResources.map(ProcessResources::getDestinationDir));
-                        Path outputDir = eclipse.getClasspath().getDefaultOutputDir().toPath();
+                        Path outputDir = sourceSetProject.getExtensions().getByType(IdeManagementExtension.class).getEclipseModel().getClasspath().getDefaultOutputDir().toPath();
                         if (outputDir.endsWith("default")) {
                             // sometimes it has default value from org.gradle.plugins.ide.eclipse.internal.EclipsePluginConstants#DEFAULT_PROJECT_OUTPUT_PATH
                             // which has /default on end that is not present in the final outputDir in eclipse/buildship
diff --git a/userdev/src/functionalTest/groovy/net/neoforged/gradle/userdev/RunTests.groovy b/userdev/src/functionalTest/groovy/net/neoforged/gradle/userdev/RunTests.groovy
index a774678c..ab8c0709 100644
--- a/userdev/src/functionalTest/groovy/net/neoforged/gradle/userdev/RunTests.groovy
+++ b/userdev/src/functionalTest/groovy/net/neoforged/gradle/userdev/RunTests.groovy
@@ -425,13 +425,14 @@ class RunTests extends BuilderBasedTestSpecification {
                     import org.junit.jupiter.api.Assertions;
                     import org.junit.jupiter.api.Test;
                     import org.junit.jupiter.api.extension.ExtendWith;
+                    import net.minecraft.core.registries.Registries;
                     
                     @ExtendWith(EphemeralTestServerProvider.class)
                     public class TestTest {
                         @Test
                         public void testIngredient(MinecraftServer server) { // required to load tags
                             Assertions.assertTrue(
-                                    Ingredient.of(ItemTags.AXES).test(Items.DIAMOND_AXE.getDefaultInstance())
+                                    Ingredient.of(server.registryAccess().lookupOrThrow(Registries.ITEM).getOrThrow(ItemTags.AXES)).test(Items.DIAMOND_AXE.getDefaultInstance())
                             );
                         }
                     }