This is a problem I've struggled and struggled with. No workaround or fix I found on the internet worked. In fact the work around I finally got to work incorporates a combination of fixes. Symptoms The Form or User Control designer in Visual Studio displays the following error: Visual inheritance is currently disabled because the base class references a device-specific component or contains P/Invoke Cause In case you didn't know P/Invoke is used to access un-managed code (com components). The designer ......