Well, I uninstalled engine, removed and re-added the install user, installed again (this time in SINGLE USER mode) and authorized, but ran into the same problem.
Then, I didn't change anything, just rebooted the system, and now I can't even get past EngineInitializer.initializeEngine().
When I run my application, no exception is thrown when calling EngineInitializer.initializeEngine() - the program just exits unexpectedly with no further information (presumably with a System.exit() call?).
I'm using RHEL6 x86_64, but using a 32-bit JDK/JRE (1.6 update 29) to compile & run.
Jason