Hog4pc - Setup wizard ended prematurely because of an error.

When installing hog4pc 2.6.0, The installer got to "extracting fixture libraries... (this may take a few minutes). After waiting for 20-30 mins, the installer "rolled back action" and said the setup wizard ended prematurely because of an error.

I can no longer install or run any version of Hog4PC. Every version of Hog4PC i've tried to install just repeats the exact same problem.

Interestingly I can run hog4PC while the fixture libraies are being extracted (see 1st photo). After 20-30 minutes, the install fails and the (partialy) installed software is erased. I'm hitting a dead end here and I want to try everything before I have to reinstall windows.

Hardware is Acer all in one touchscreen PC running windows 8.