ReFLeXz

Hey guys just brought the DLCs just now off steam and tried to run them but Datacachepreprocessor.exe and it wont startup, on all of them not even a nofication it will only retry twice then say in the steam dialouge "The game is currently unavailable" im really starting to blow my fuse. its like you have being waiting for something for ages and when you get there there is nothing. can anyone help me with this or refer me?