If you are trying to export products from Magento’s Dataflow profile, and you have more than 8000 products, it is common to end up with an error 500 without many information.
To be able to handle that from the web interface without running a profile from the shell, you have to tell your fcgi to be patient!
Here is how to do so:
FcgidBusyTimeout 3600
FcgidIdleTimeout 3600
FcgidProcessLifeTime 7200
Here some more specific informations.
Enjoy!
