I updated IC to the latest build this morning and after restarting trying to do anything with our salesforce org gives me the following error:
INVALID_LOGIN: Invalid username, password, security token or user locked out.
None of the credentials changed and the account is not locked out (verified by logging in through the web browser and Force.com IDE). On top of that, I can't find a way to actually reset the credentials because of this error... I even tried removing them from illuminatedCloud.xml to see if it would force it to prompt for them again. No luck.
IntelliJ IDEA 2016.2.5 Build #IU-162.2228.15, built on October 14, 2016 JRE: 1.8.0_112-release-287-b2 x86_64 macOS: 10.12.1