I have recently downloaded and installed Autodesk Express Viewer on several different types of machines to test it out with a web application we have. The application has been re-written to use AEV rather than VV. All of the machines work fine except for the Windows 98 machines. The web application we have basically displays a list of .dwf files that the user can pick on then displays the .dwf file at the botton of the page in the viewer. When the user scrolls down the page to see the viewer area the problem starts. Once the viewer is displayed the image in the viewer takes over the entire screen. Then as I scroll up/down it just partially displays the image all over the left side of the screen. If I scroll to the top of the page were the viewer is not displayed, minimize the screen, then maximize the screen everything displays correctly - until I scroll back down the page into the viewer area. There do not appear to be any error messages in the Browser. All of the Win98 machines have Internet Explorer 5.5 installed on them. If I open AEV outside of the web and view a drawing everything works OK.
Obviously I could get rid of Windows 98, but I was wondering if anybody else has seen this problem and/or has any ideas what might be causing this.
I thought the problem might be related somehow to the frames, so I created a simple one page web that has AEV on it. I still get the problem - though in testing there have been some rare cases when I do not get the problem.
This sounds like a video card driver issue. Try turning down hardware acceleration (right click Desktop>>Properties>>Settings>>Advanced or somewhere in there) one notch at a time, trying EV each time to see if it helps.