diff --git a/Library/Rainmeter.cpp b/Library/Rainmeter.cpp
index 39176733..2c22b58b 100644
--- a/Library/Rainmeter.cpp
+++ b/Library/Rainmeter.cpp
@@ -171,7 +171,13 @@ void Initialize(bool DummyLS, LPCTSTR CmdLine)
 */
 void ExecuteBang(LPCTSTR szBang)
 {
-	if (Rainmeter) Rainmeter->ExecuteCommand(szBang, NULL);
+	if (Rainmeter && szBang)
+	{
+		// ExecuteBang needs to be delayed since it crashes if done during processing.
+		// The receiver must free a given string buffer (lParam) by using free().
+		WCHAR* bang = _wcsdup(szBang);
+		PostMessage(Rainmeter->GetTrayWindow()->GetWindow(), WM_TRAY_DELAYED_EXECUTE, (WPARAM)NULL, (LPARAM)bang);
+	}
 }
 
 /*
@@ -1318,7 +1324,7 @@ void RainmeterRefreshAppWide()
 	if (Rainmeter)
 	{
 		// Refresh needs to be delayed since it crashes if done during Update()
-		PostMessage(Rainmeter->GetTrayWindow()->GetWindow(), WM_DELAYED_REFRESH_ALL, (WPARAM)NULL, (LPARAM)NULL);
+		PostMessage(Rainmeter->GetTrayWindow()->GetWindow(), WM_TRAY_DELAYED_REFRESH_ALL, (WPARAM)NULL, (LPARAM)NULL);
 	}
 }
 
diff --git a/Library/TrayWindow.cpp b/Library/TrayWindow.cpp
index 3b89a76b..a73918b1 100644
--- a/Library/TrayWindow.cpp
+++ b/Library/TrayWindow.cpp
@@ -119,7 +119,7 @@ BOOL CTrayWindow::AddTrayIcon()
 		tnid.hWnd = m_Window; 
 		tnid.uID = IDI_TRAY;
 		tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; 
-		tnid.uCallbackMessage = WM_NOTIFYICON; 
+		tnid.uCallbackMessage = WM_TRAY_NOTIFYICON; 
 		tnid.hIcon = m_TrayIcon;
 		wcsncpy_s(tnid.szTip, L"Rainmeter", _TRUNCATE); 
 		
@@ -410,7 +410,7 @@ LRESULT CALLBACK CTrayWindow::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARA
 			}
 			else if(wParam == ID_CONTEXT_REFRESH)
 			{
-				PostMessage(tray->GetWindow(), WM_DELAYED_REFRESH_ALL, (WPARAM)NULL, (LPARAM)NULL);
+				PostMessage(tray->GetWindow(), WM_TRAY_DELAYED_REFRESH_ALL, (WPARAM)NULL, (LPARAM)NULL);
 			} 
 			else if(wParam == ID_CONTEXT_SHOWLOGFILE)
 			{
@@ -538,7 +538,7 @@ LRESULT CALLBACK CTrayWindow::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARA
 		}
 		return 0;	// Don't send WM_COMMANDS any further
 
-	case WM_NOTIFYICON:
+	case WM_TRAY_NOTIFYICON:
 		{
 			UINT uMouseMsg = (UINT)lParam; 
 
@@ -810,7 +810,7 @@ LRESULT CALLBACK CTrayWindow::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARA
 		}
 		break;
 
-	case WM_DELAYED_REFRESH_ALL:
+	case WM_TRAY_DELAYED_REFRESH_ALL:
 		if (Rainmeter)
 		{
 			// Refresh all
@@ -818,6 +818,16 @@ LRESULT CALLBACK CTrayWindow::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARA
 		}
 		return 0;
 
+	case WM_TRAY_DELAYED_EXECUTE:
+		if (Rainmeter && lParam)
+		{
+			// Execute bang
+			WCHAR* bang = (WCHAR*)lParam;
+			Rainmeter->ExecuteCommand(bang, NULL);
+			free(bang);  // _wcsdup()
+		}
+		return 0;
+
 	case WM_DESTROY:
 		if (Rainmeter->GetDummyLitestep()) PostQuitMessage(0);
 		break;
diff --git a/Library/TrayWindow.h b/Library/TrayWindow.h
index 39b8ddaf..e671acb4 100644
--- a/Library/TrayWindow.h
+++ b/Library/TrayWindow.h
@@ -23,9 +23,10 @@
 #include <gdiplus.h>
 #include <vector>
 
-#define WM_DELAYED_REFRESH_ALL WM_APP + 0
+#define WM_TRAY_DELAYED_REFRESH_ALL WM_APP + 0
+#define WM_TRAY_DELAYED_EXECUTE     WM_APP + 1
 
-#define WM_NOTIFYICON WM_USER + 101
+#define WM_TRAY_NOTIFYICON WM_USER + 101
 #define TRAYICON_SIZE 16
 
 enum TRAY_METER_TYPE