So the installer says something like:
Setup has experienced an error. Please do the following: - Close any running programs - Empty your temporary folder - Check your Internet connection (Internet-based Setups) Then try to run the Setup again. Error code: -6003
What do you do to solve this?
Why, erase any folder with a number as its entire name (mine was named “09”, but I’m sure it can be something else) in the following directory:
%System Drive%\Program Files\Common Files\InstallShield\Professional\RunTime\
No, it doesn’t make sense, but it worked perfectly. No reboot or anything. Just remove (or simply move) that folder, and things will start working. Brilliant.