[citation][nom]longliverock1974[/nom]I wonder if these mods are tested before being made public. There's nothing worse than having to re install a game and other mods because the latest one you installed wasn't compatible with your game version or another mod you already have installed.[/citation]
Fortunately, since TES games are made to be modded, VERY few (if any) can actually break your game install. There are very few "version" issues with TES mods, and even then it's mostly for things like the "script extenders" since the Devs almost never muck with the plugin format, and mod conflicts are usually expressed by the later loading mod (load order is important) getting priority. In the rare cases where mod conflicts cause actual crashes, removing one or the other conflicting mods (assuming you know which ones are conflicting) usually fixes things.
Most of the time, what you have to watch out for is breaking your saves...most of the time this requires you to revert to a save prior to installing the mod. But this doesn't happen very often.
As far as my Bethesda modding credentials go, I've modded, and used many mods for, Morrowind, Oblivion, Fallout 3, and New Vegas and I've never had to re-install my game because a mod broke something.
KotOR on the other hand...