Can I install both a 32 bit and 64 bit version of GAUSS on the SAME machine?
Yes, you can install both a 32 bit and 64 bit version of GAUSS on the SAME machine.
However, you must install the 32-bit and 64-bit versions of GAUSS in different folders. For example, you could install GAUSS 14 64-bit into C:\gauss1464 or C:\gauss14x64 and install the 32-bit version in something like C:\gauss1432 or C:\gauss14x86. The actual folder name does not matter. You can name them anything you would like, they just need to be different.