I have also a little problem, the activation went fine but I can't locate the license file on my hard drive. Thus I'm unable to make a backup of it.
 ok false alarm, I just found it under /Users/AppData (invisible folder)
Win7 Pro x64 | GTX 770 2GB + GTS250 512Mb | Intel Xeon i7 4x 3.4ghz | 16 GB ECC Mem | Intel SSD 520 | Dell 27"
SOFTIMAGE l 2011 + OCTANE V1.20