Thanks:-)
The repair tool didn't work, so I uninstalled and reinstalled. Now it works again.
Before I reinstalled, I checked the redistributables, there were 4 that weren't on my computer, which surprised me, since I checked just about 2 months ago.
Anyway, it works now, but I have Wamp server on another computer, with my project as an exact copy. If I find that the redistributables are
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