2) forum has a search function. Remember to use it. Searching on the Q&A thread, as a example, its like googling
3) when talking about a mod: you need to provide specific information about it. Which decapitation mod are you using (link to the source). How did you use it. What was your base module (Native, Floris, etc). Your game version (Warband 1.170). Version of the mod, module, etc you are using
4) When you see a error message: copy the entire thingy and post it on the forum. That is how you learn how to read them, and once you do, they will help you fix your bugs.