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Quoted from Starkie

When I try and open either installer (snapshot or normal) and I get the same error message “This installation package could not be opened. Contact the application vendor to verify this is a valid Windows Installer package.
I’ve un-installed mumble so I can’t do the simple replace mumble.exe for the new one.
I’ve disabled UAC.
Still stuck
Help anyone? :/

Got it aswell, all i had to do was redownload the installer

i’ve always had a problem with launching tf2 with the mumble overlay on, each time it launches, it gives me the launch message, but it doesn’t launch at all

help?
inb4 recognizing people’s voices