When you start CoventorWare, the splash screen pops up and then disappears after a few seconds. Errors in environment variables values can lead to this error. Go to Control Panel-> System-> Advanced->Environment Variables, select Temp variable and click on Edit. Make sure you do not have any forward slashes in the variable value. For example, if your Temp variable is set to C:/Temp, please change it to C:\Temp. Click Ok to save the changes and start the software again.