I was trying to get the PDF version of FR working on 64-bit Windows server.
Every time when I perform the PDF view it was giving an HTTP 500 error.
Print log was showing that I don’t have Ghostscript installed, where as I had it installed.
[2011-01-19T04:05:55.491-08:00] [EPMFR] [ERROR]  [oracle.EPMFR.core.reporting.printserver.PrintInstanceThread] [tid: Thread-11] [ecid: 0000IqUAf6lC4yQ_m_S4yZ1DDhE2000002,0] [SRC_CLASS: com.hyperion.reporting.printserver.PrintInstanceThread] [SRC_METHOD: processInstance] Could not load Ghostscript or Distiller. Please ensure that a supported version of Ghostscript or Distiller is properly installed
So I un-installed Ghostscript, cleaned up all the registry entries and installed the 32-bit version of Ghostcript (Yes, even on 64-bit servers, you have to use the 32-bit version).
Also I updated the path entries with the Ghostscript one
That’s it…..we were back in business