One of my customers is getting the error in the subject line when one of the forms with some Nevron buttons loads. The buttons appear white with a red cross through (screenshot attached).

This is happening on a Windows 7 PC.

Anybody know what's going on, or more importantly any suggestions for a fix?

The same software is working 100% on over 1000 other PC's.

Hello Louis,

Could you post the stack trace shown when Details button of the Error popup was clicked.

Best Regards,
Nevron Support Team

Found the problem... in case it helps anybody else, it was caused by a missing font (Arial in this instance).