Just a note that I recently discovered a setup failing that is over 2GB. Our products are getting larger and larger, may be over 2GB.
I just wanted to mention that I wish you could figure a way to have files larger than 2GB, even if there are data files.
I have to look for another setup tool now, and I was very accustomed to Install Creator. Maybe another compression type, or you simply reinitialize the compression engine for the 2nd data file.