What a bu@@er, I do not use Windows 10 for development and do not plan to either. So, I won't be able to test TwinBasic for the moment. What a pity. I suggest you chaps find alternatives for other versions of the Windows o/s. It needs to be accessible to more than just the current windows version. I understand the reasons - I am just one of those people that has absolutely no plans to use Windows 10 whilst any other solution exists.