Help! I am getting: Quicktime error -50...when trying to use the "Share" and "Send to Compressor" function. I need to export my show! Thanks for your suggestions! (using FCP7)

Question

Help!  I am trying to export my show and commercials from the timeline. Both Share and Send to compressor are not working.
Its starts compressing then I get Failed"Quicktime Error -50". I appreciate any suggestions.
SYSTEM INFO
Model Name:          Mac Pro
  Model Identifier:          MacPro5,1
  Processor Name:          Quad-Core Intel Xeon
  Processor Speed:          2.4 GHz
  Number Of Processors:          2
  Total Number Of Cores:          8
  L2 Cache (per core):          256 KB
  L3 Cache (per processor):          12 MB
  Memory:          10 GB
  Processor Interconnect Speed:          5.86 GT/s
  Boot ROM Version:          MP51.007F.B00
  SMC Version (system):          1.39f11
  SMC Version (processor tray):          1.39f11

Answer 1

First try exporting a self-contained movie from FCP, the using the resulting file in Compressor.  To do it, go to File->Export->QuickTime Movie (do NOT use QuickTime Conversion).  In the export window, check the self-contained option but do not "recompress all frames."
Once the export is finished, launch Compressor then use the self-contained file as the source.  If that fails, you may want to try using theis: http://www.digitalrebellion.com/compressorrepair/
-DH