diff --git a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDefinitionsManager.kt b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDefinitionsManager.kt
index 1afa63894a5..4c447d2f3df 100644
--- a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDefinitionsManager.kt
+++ b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDefinitionsManager.kt
@@ -142,12 +142,14 @@ class ScriptDefinitionsManager(private val project: Project) : LazyScriptDefinit
         }
     }
 
-    override val currentDefinitions
-        get() =
-            (definitions ?: run {
+    override val currentDefinitions:Sequence<ScriptDefinition>
+        get() {
+            val scriptingSettings = kotlinScriptingSettingsSafe() ?: return emptySequence()
+            return (definitions ?: run {
                 reloadScriptDefinitions()
                 definitions!!
-            }).asSequence().filter { KotlinScriptingSettings.getInstance(project).isScriptDefinitionEnabled(it) }
+            }).asSequence().filter { scriptingSettings.isScriptDefinitionEnabled(it) }
+        }
 
     private fun getSources(): List<ScriptDefinitionsSource> {
         @Suppress("DEPRECATION")
@@ -165,6 +167,8 @@ class ScriptDefinitionsManager(private val project: Project) : LazyScriptDefinit
     fun reloadScriptDefinitions() = loadScriptDefinitions()
 
     private fun loadScriptDefinitions() {
+        if (project.isDisposed) return
+
         val newDefinitionsBySource = getSources().map { it to it.safeGetDefinitions() }.toMap()
 
         lock.write {
@@ -176,8 +180,9 @@ class ScriptDefinitionsManager(private val project: Project) : LazyScriptDefinit
     }
 
     fun reorderScriptDefinitions() {
+        val scriptingSettings = kotlinScriptingSettingsSafe() ?: return
         definitions?.forEach {
-            val order = KotlinScriptingSettings.getInstance(project).getScriptDefinitionOrder(it)
+            val order = scriptingSettings.getScriptDefinitionOrder(it)
             lock.write {
                 it.order = order
             }
@@ -189,6 +194,10 @@ class ScriptDefinitionsManager(private val project: Project) : LazyScriptDefinit
         }
     }
 
+    private fun kotlinScriptingSettingsSafe() = runReadAction {
+        if (!project.isDisposed) KotlinScriptingSettings.getInstance(project) else null
+    }
+
     fun getAllDefinitions(): List<ScriptDefinition> = definitions ?: run {
         reloadScriptDefinitions()
         definitions!!
@@ -211,6 +220,7 @@ class ScriptDefinitionsManager(private val project: Project) : LazyScriptDefinit
 
     private fun updateDefinitions() {
         assert(lock.isWriteLocked) { "updateDefinitions should only be called under the write lock" }
+        if (project.isDisposed) return
 
         val fileTypeManager = FileTypeManager.getInstance()
 
@@ -249,7 +259,8 @@ class ScriptDefinitionsManager(private val project: Project) : LazyScriptDefinit
     }
 
     companion object {
-        fun getInstance(project: Project): ScriptDefinitionsManager = project.getServiceSafe<ScriptDefinitionProvider>() as ScriptDefinitionsManager
+        fun getInstance(project: Project): ScriptDefinitionsManager =
+            project.getServiceSafe<ScriptDefinitionProvider>() as ScriptDefinitionsManager
     }
 }