Well, in my case the BloodyLicenseCryptor worked perfectly (i activated Bloody 3 with it and flawlessly updated to bloody 4). Just use google for it.
There is a discussion on MPGH too, heres a direct post:
https://www.mpgh.net/forum/57-general...ml#post8744976
But i didnīt do all the steps described. As mentioned, all i did was: open the cryptor, change the first two lines with random numbers (keep the amount of numbers: four in line 1, five in line 2), enter my mouse ID on line 3 and use the generated license.bld to activate bloody 3. Then update to bloody 4. Works like a charm.