Refresh and Repair are "supposed" to do the same thing (I dont know why they are called different names).   The idea is that it dumps all the previous updates and downloads them again new.

When I have an update that creates problems, Ive always had the best luck by closing Proseries and use Repair from the Windows programs menu.....thats not to say that Refresh wont work too....this is just what Ive had the best luck with.