Unfortunately this is somewhat hard to isolate in all cases. I am using SCI Studio 3.0.1.29 (dated 16 March 2003). I notice this problem only appears to happen on Windows 98 SE. It does not happen on my Windows 2000 platform.
What happens is this:
If you spend time going through the Views, sometimes just looking, other times cycling through the loops and cels, you will once in awhile get the message:
"The parameter is incorrect."
Eventually you will get:
"Access violation at address 004B7475 in module 'SCISTUDIO.EXE' Read at address FFFFFFFF."
I can get this to happen fairly consistently and by fairly consistently I mean anytime I use SCI Studio on Windows 98. I also noticed the frequency of this happens more if you open a large, detailed game. For example, I opened Space Quest 3 and Leisure Suit Larry 3 and this would happen fairly regularly, but not in any discernible pattern. (Also you usually cannot shut down the application normally after this. When you start getting the "parameter incorrect" message but before the "access violation" message, you will often be unable to close the application - it will just spawn more "Parameter is incorrect" message boxes.
Just bringing it up as a matter of possible interest in case anyone else is finding this issue. Again, this never appears to happen on my Windows 2000 machine but happens consistently on my Windows 98 Second Edition machine.