[Error msg: An unexpected OS error ID #0 has occurred!"]

Ran into the same problem and Katie's original suggestion of deleting the alias did work. I was launching out of the dock and the old VW icon launched VW with a splashscreen saying it was 11.5. I then would get the error message. After dimissing the error message, the program would launch and the interface looked pretty much the same but I tried "export image file" and nothing would happen.

After reading this forum, I tried launching from the actual app icon and it worked. So I have deleted the icon out of my dock and selected "keep in dock" while VW 11.5 was running.

G5 Panther

[antialiasing and transparency]

If I turn on antialiasing (Custom RenderWorks options) I lose transparency, both in objects and in props. Using version 10 on Mac G4 OS 9.2.2 (I think I tried it in X and still had this problem) with 256+ megs of RAM allocated (1GB total RAM). I've been rendering out with antialiasing off and double the size I need so I can shrink it down.