Projucer self-update doesn't work

Windows 10 / 64-bit

When starting Projucer 5.0.0 it asks me to update and overwrite my installation (Z:/JUCE). Once it finished downloading I get a warning dialog that tells me that it couldn’t overwrite that folder and that’s it. It stays at 5.0.0.

Can I download 5.0.1 somewhere and manually unzip it?

I have the same problem with overwrite.
I was able to update into a new folder.