Paul -
We installed RC5 from source on RH Linux. We got the client up and
running with little or no trouble. Initially we were getting the
"corruped in transport" message as well. Make sure the
i2b2_config_data.js is configured correctly (the RC5 release takes
advantage of pointing to multiple projects per domain - if you have it
configured for RC4 where it only pointed to 1 project which was
preset, you may have problems). Because we're dealing with the client
level, pages are cached so if you make any changes to the client code,
you'll need to delete/clear your cache. I learned that the hard way
after an hour of banging my head, wondering why my changes weren't
being implemented.
Also, it may be worth your while to review the tomcat/jboss/ or even
apache logs to help troubleshoot. This has been a tremendous help to
me in troubleshooting the ajax client.