ESRS Installation Settings Script Failure on EXSi 6.7u2

Help... I'm trying to track down the root cause of the settings script failure and not sure if it is going to come down to Java version, or an incompatibility between the script and EXSi 6.7. From what I see online 6.7 "SHOULD" be ok with the latest ESRS_VE.x86_64-3.36.00.10.ova. However after extracting and beginning the build of the VM, when I complete the "customize" values I consistently get the infamous "Unhandled Exception". I intially thought it was a value I was putting into the customization (or leaving out... eg. IPv6) however after a number of attempts and the exact same message every time (which seems to not point to a given variable, but a general incompatibility). Thoughts? Anyone else tried this and seen the same? Thanks for any suggestions or input you can provide. Luke