I'm using V16.20 on server side... The error is random... Normally, users call me just after the fact, so I rarely see it from my eyes! I've experienced it once last week and it was while loading the main page. That screen is basically just buttons, menus, text and frames. The buttons all have an icon (some are pvx native icons, but some are images (ICO, GIF, BMP, PNG or JPG) stored on the client PC).