Yesterday the comments stopped being posted early, & most were a bit O/T, so I've no idea if anyone was/is interested in that GOTD or if they had problems with Invalid License using the key in the Readme.txt file. So, this is a just in case sort of thing.
For Invalid License reports see:
http://www.disk-partition.com/forum/discussion/119/invalid-license
Basically it shows how/where to enter the key in the app's .ini file.
2nd, the Windows To Go Creator -- which to me is the only part of the app that's out of the ordinary -- doesn't appear to work with the downloaded US win8/8.1 upgrades from Microsoft. So if that's why you were interested in the software, but couldn't get it registered or activated, you might not want to bother further.
FWIW it would not work with the original ESD wim file downloaded from MS a year ago, nor would it work with the more recent win8.1 version, in regular win7 64 or 2 win7 VMs.