I'm not sure which problem you are really talking about -- or perhaps you have your error numbers confused. Which patch did you try to download?
Next question ... which version are you using 2.8?? If it's ERROR 41 problem(foxpro)... that has a patch if you're using vers. 2.8. It was fixed in version 2.9 and later issue.
However, if you're really talking about The ERROR 43 problem, it comes up on fast computers when accessing certain lists. You can try going to Utilities/Preferences and in the Desktop Preferences window, check Disable Name AutoFind box. If you still get this error after doing that, you may need to free up some additional memory on your machine. If you need further information, you might try checking in the Knowledge Base.