After changing to use InstallAnywhere 2011 FP 4 instead of IA 2010, IA installs on Windows IA64 hang with the following error in the IA install log:
Status: FATAL ERROR
Additional Notes: FATAL ERROR - The Installer has failed due to an Unhandled Exception
java.lang.UnsupportedClassVersionError: com/zerog/ia/designer/SystemEnvironmentVariables (Unsupported major.minor version 49.0)
STAF is actually installed/updated successfully as the error occurs after installing the product files during "Installing... Java Runtime Environment".
I opened Flexera Support Incident #SIOC-000133946 so that Flexera can look at the problem and hopefully provide a fix.
For now, I'm continuing to use IA 2010 to build IA for Windows IA64 until Flexera can problem a fix for this problem.