Actually it has nothing to do with the registry and there is no registry digging out to do, It was a bug that affected a few systems, it was resolved and the download files replaced within a day of us noticing the problem, it would seem Rokista was unfortunate to download prior to the change or downloaded from another source who were unaware of the problem.
So it was not a case of an intentional pop up, Alcohol does not resort to placing this sort of system into its software.
Don't ya just love people who make assumptions without knowing the facts.
To resolve it
Please go to C:\Program Files\Alcohol Soft\Alcohol 120 and try to delete AXShlEx.dll, if you fail to delete it just rename it some different name, then restart windows, then delete the whole folder.