No it's not the "cracked" version.
Fully bought and paid for.
I phoned UBIsoft support, and after about half hour, figured out that Myst4 drops it's "SavedGames" folder into the "Documents and Settings" folder and Myst4 needs Administrator rights to it, instead of the parent directory that it's installed in. My Documents and Settings folder is redirected to my home file server instead of being in the machine itself, Myst4 would not start. Resetting the "my Documents" filepath to default fixed the problem.
I buy and pay for all my games.
Heeter