Duck1919Fraser Nothing here says a mod is the issue. 10% confidence means the possible cause is also ignorable. Better Exceptions is fine in the current version linked from TwistedMexi's blog.
It could be a mod, of course, but the only way to find out is to first try again if you have the issue with an empty mods folder. That includes removing Better Exceptions, which is a mod.
If you don't have it, put stuff back in, maybe in a different order than you did.
Please note that no 18+ mods are NOT covered here, AT ALL. These are the official safe-for-under-18s Forums. I have no idea if there are issue with those -- I don't follow info about them at all.