Hello Melissa,
The error you've described is an InstallAnywhere error on Java8 - the installer infrastructure (Flexera) is not compatible with the Oracle's new Java8 folders hierarchy.
You may try this work-around:
Run the installer using a command line with the following argument: LAX_VM
i.e.
Open Windows command line (cmd) and type:
InstCAIdentityGovernance.exe LAX_VM "C:\Program Files\Java\jdk_version\bin\java.exe"
Naor