Cannot set visibility to visible error

Hi Folks Anyone get this error?
cannot set visibility to visible, show, dialog, close, windowinterop helper. ensure handle while a widow is closing error

No never heard of this one. I have used V28,29,30 and 38

Welcome to the forum.

Hi Bazzer, this was a license issue. There was a license in the license folder that shouldn’t be there. And no one can say how it got there. We also have cimatron here and it behaves the same when that happens. have to go in and delete it. Thanx for the welcome and thank you for the reply.