Can't take vacation (custom careers)

Hi @UN1V3R5UM Mods and CC require maintenance to keep them in your game, if the modder has not updated it (you can check via the mod tracker for reported broken, etc mods). The process of culling & removing it, to find the broken mod is the only option, as many cc careers and traits have been broken lately (ie: and not updated by the modder).

Also,  if you are new to using cc/mods please check my post here on maintaining them in your game, as there is many tips including the 50/50 method and tools to help you fix your game. 

Hope this helps.

Sasha

nb: If this solves your question, please mark the reply as having been the solution, so as to help others with a similar problem in the future. 
I have no connection to EA