I haven't installed anything new, including updates, for a while. No website browsing other than my usual 10 or 15 "safe" sites either. Regardless, the other day my iMac running el Cap 10.11.6 decided to change up some file associations. A few examples: double clicking on a JPG tries to open Acrobat, PXM won't open with Pixelmator, Office files are misdirected, etc. I know how to change individual file associations easily enough, but I don't know how many file types have been scrambled. I'd like to look at a list of file types and their associated applications, as I believe Windows allows (not sure, it's been a while.) Is there a way to do this other than one by one? I'm not even sure how many file types there are on this ~7 year old rig, but I'm sure I don't know all of them.