Comment 1 for bug 1098354

Had this same issue, went through and did apt-cache search Appindicator3, looked at the packages available and installed gir1.2-appindicator3-0.1 - Typelib files for libappindicator3-1. This apparently fixed that issue, allowed gamecaster to run. Haven't tried recording anything yet, but this appears to be a dependancy issue and the above typelib files appears to have fixed it.

Kubuntu 12.04