I've already contacted MG to find out what we can do about getting this patched officially, but in the meantime, if this is giving you problems, I've uploaded a patched file to the official site. Be careful, you'll need to install this manually and you'll need to overwrite a file.
Extract the file from the zip anywhere you like and then copy the file Level2.pak into <your gamefolder>/Levels/ (so if you installed to the default directory it will be something like C:\Matrix Games\Star Sentinel Tactics\Levels\ )
If you're prompted to overwrite the existing file, you put it in the right place, so say yes.
Please let me know if that resolves the problem. I'm sorry, but this won't automatically patch saved games which are past the point, but if you have a saved game just before you found the keycard (even if it's after destroying the circuit box) this should fix it.
EDIT: This fix will work on copies of the game bought anywhere. (Not that we endorse that kind of thing, but it was released on other sites first, so some may not have realized it would be released here later.)
< Message edited by PhilSST -- 11/24/2010 2:43:43 AM >