strange problem: cannot use file selector (OSX)

Not the same. I have a set of apps running fine all the time with the OSX file selector - this can be shown. But it cannot be shown that the problem with WL 7 on OSX 10.8.4 is not on other systems too. You want to upset me completely?
So: you don’t have an idea what’s wrong, you seem to reject the idea it’s a WL7 problem and point me to an upgrade I don’t want to buy and tried to provoke me personally. Very clever treatment of customers.