If you’re working with Final Cut Studio , you might have experienced some trouble with Compressor. For instance, after some time on one machine at my workplace you couldn’t transcode on the machine itself, only other machines available on the network (for insiders: the qmasterd service not launching story). Or in another case Compressor (or rather the Batch Monitor) kept aborting the transcode with strange Quicktime errors.
In order to fix this, Apple put a Troubleshooting Guide online, but before you start try’n’error with it, I suggest you download Compressor Repair from Digital Rebellion, it really works wonders and fixed both of the problems I was talking about above without the hassle of a reinstall. Speaking of which I also recommend the FCS Remover app from the same company to get the software off your disk in the first place.