did you also manually delete the silent hunter 3 directory after install? Also make sure theres no game dir under the documents and settingd dir..
Ive had similair problems, and it was solved after i manually deleted the leftovers, this may be wrong but trying it doesnt cost anything
i myself have had CTD's on every patrol since a week, i suspect the vismod but theres no proof and i cant live without it installed, investigating further..