I've a small but annoying issue with GMax. When I pan in any viewport, the model vanishes and all I see is the bounding box. When I stop panning, the models reappears. Up until a week or so ago that didn't happen--the model never vanished while panning. I must of changed something, but damned if I can discover what it was. I've fiddled with the various settings to no avail. Any help would be appreciated.