Well that makes sense that, if Windows is only 32 bit that it would only install the 32 bit version...
But then why would it give you "Path conflict" message?
Maybe it's trying to install the 64 bit version and, because it's only 32 bit, it can't and is freaking out...
I'd contact XLN about it...
Or just try uninstalling and re-installing...and see what happens before contacting them.