Checked my UI folder, usually there's just a hyperspace map file, but there was a google chrome file in it as well this time. I deleted it and started the launcher. The launcher at the end of the check said "Failed Hash Check...Repairing" and the bar didn't change to one solid colour across as usual.
I loaded up my Jedi and went straight to reset my expertise, and now all is well, no more crashes.
No idea which one fixed it, but it works now.
Thanks for the help!