Ok here's a weird one for all of you..
Altium 16, been using it for months without issue.
Today I go to add a component from the Altium vault (like any other time I've done it) and try to type "1k 0805"... only the space bar isn't putting spaces in the search box. The space bar works everywhere else in Altium. Restarted Altium, restarted Windows... I just cannot get Altium's vault search box to be able to take a space!