In the process of setting up my pcWRT Newifi-D2 v2.4.5 router, there are times I would log in, review the Status page, press the “Apps” link, and for a brief period of time (perhaps 2 seconds or less) see a dialog pop-up box saying “Oops” with the message “Unknown Error”. It doesn’t happen all the time and once I have logged in, does not seem to happen until I have been logged out for a period of time. I have also SSH’ed into the command line and run “logread” but do not see any error reported in the output. It may well be I had profile(s) that had no device assigned or something goofed up with a calendar but I wanted to report it as a FYI. I know it’s generated by some of your JavaScript but I don’t have a good idea why. Happy hunting!