This happens from time-to-time when I install new add-ons. When I start the game up, the game will keep loading the same add-ons over and over. Sometimes it's just one add-on. Other times it's multiple add-ons.
The frustrating part about this is that it appears to be somewhat random which add-ons seem to cause the problem. Typically, I will keep deleting non-default add-ons until the game loads. Typically I will narrow the problem down to a single add-on that triggers the loop, or two add-ons that appear to trigger the loop when present together. However, if I then delete my add-ons folder, load a fresh set of just default add-ons, and place the one trouble add-on or pair of trouble add-ons, the problem won't arise again. Hence, it's difficult to replicate this problem--not without dumping an entire add-ons folder, which I'd rather not do.
My usual solution is to delete my add-ons folder, get a fresh one, and add add-ons back in until add-on loading gets stuck in a loop again. Then, I'll find which add-on(s) cause the problem (sometimes a different add-on or set of add-ons altogether), and just exclude it/them if I don't find it/them to be necessary. This is a very tedious solution, though, and not really ideal/satisfying.
I mostly want to know if anyone else has experienced this problem before. If so, what caused it for you (if you were able to figure it out)?