For some reason, about every 6 1/2 seconds, everyone on my game screen, including me, has the purple spell effect around them. When it happens, for a split second there is a 10 second timer at the corner of my screen, with the icon of nighteye. The mod that caused it is the archive invalidation invalidated mod, which somewhat ironically, fixed many problems for me. I haven't been able to press tab at the right moment to catch it in my active effects list, because its duration is extremely short. I wasn't sure whether to put this in mod support or not, so I stuck it here. Thanks in advance.

I had something similar once, it was caused by a script that ran every so often and if you were carrying a particular item a it raised your personality score by a certain amount. The script had set it as a spell effect with no visible effect. Another mod - one that changed spell effects changed it to be visible. I fixed it by moving the first mod to below the second one in my load order. I can't remember the names as both of those mods are long gone.

Thank you very much, I'll mess around with my load order and see what I can do. Edit: It worked, though the spell effect timer is still there. It doesn't matter to me much anyway, I'll just change it in the UI settings.Thank you very much.