I don't have a folder by that name in C:\Program Files\InstallShield Installation Information\
folder -- I went through the list of folders it contained and it didn't appear that any of them were for the Decompiler program.
I did find in another post ( http://www.sothink.com/phpBB2/viewtopic.php?t=11586&highlight=rpc
) that it could be some of my dll's -- so i installed the update listed in the post and it appears that I was now able to remove the 2004 version. However, when I run the 2005 Setup, it still hangs. The Install process stops on the screen
Setup Status: Sothink Decompiler Setup is performing the requested operations