just installed heRO, and this happened when I started the game

[GM-Garr]

Then, you might want to try doing following steps:

a) If your heRO is installed inside Program Files (either one if there's 2), please move it from there.
b) Right click on all of the heRO.exe, heROpatcher.exe abd setup.exe, Compatibility tab, tick Run as administrator.
c) Disable UAC 1 2

If all of that won't work last resort would be to edit registry, but let's see if any of these help first.