1-Sorry that I couldn't help you with your error. 2-To play and really enjoy the game...start with no mods at all for a couple of hours.then (if you want) come here to the nexus, download and the install the top10 (and only 10) best mods and then play the game to really appreciate mods.(make sure mods are compatible with the game version) 3-The game doesn't have major breaking game bugs (anymore). the developer mad sure to patch almost 95% of the bugs.and on the off chance you founding one,you can deal with mid play through,you don't have to start a new one. 4-A friendly advice: while playing save your game every 10 to 15 minutes. 5-I think this programming language is c++.