Yep defintely installed the Paradox version of the ptach - and I've had three updated exes from Securom to try and cure the problem but no joy...
I haven't got daemon tools, alcohol or any of the other 'dodgy' software that it might conflict with -
The only thing i can think of is something like an anti-spyware CCleaner/RegCleaner or maybe Norton ghost in the background it doesns't like. However I tried restarting in 'safe mode' with minimal drivers etc and got the same error.
I'll have another look just in case