IDE Fix pack for Rio in Delphi Third-Party Posted January 27, 2019 14 hours ago, jbg said: This assertion is thrown when the debugger's CreateProcess() call to start the application fails. I think it would be better to tell the user what the problem is (RaiseLastOSError) instead of showing the informationless "apiOK" message box. Unfortunately I can't reproduce this bug with the projects I have. Let me try and see if I can reproduce this error with a simple sample project. and post that here later.