diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 5037a6a57..f95878261 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -1206,7 +1206,7 @@ dependencies = [
 
 [[package]]
 name = "derive-docs"
-version = "0.1.20"
+version = "0.1.21"
 dependencies = [
  "Inflector",
  "convert_case 0.6.0",
diff --git a/src/lang/KclSingleton.ts b/src/lang/KclSingleton.ts
index 1c0a2c9c6..530797581 100644
--- a/src/lang/KclSingleton.ts
+++ b/src/lang/KclSingleton.ts
@@ -212,6 +212,8 @@ export class KclManager {
     this._cancelTokens.set(currentExecutionId, false)
 
     this.isExecuting = true
+    // Make sure we clear before starting again. End session will do this.
+    this.engineCommandManager?.endSession()
     await this.ensureWasmInit()
     const { logs, errors, programMemory } = await executeAst({
       ast,