Thankyou. I didn't initially consider this option given the OP said the download (at the time he purchased) was out of date. And I wasn't keen to download 700mb and go through the whole uninstall/install process without knowing for sure it was current anyway...
I've got my install up to date with SP4 now which is good. Thanks for the suggestion.
Unfortunately it didn't fix my problem (program crashes when trying to link tables) and after many hours of troubleshooting and trying different solutions suggested here I've given up on it.