How to identify why an Enterprise Linux RPM will not install on Fedora?

I have a proprietary software package that is distributed as a set of RPMs that install perfectly fine under EL8, but throws errors under F34 when running the installation script:

labview-2020-community-exe: LabVIEW Community Edition Executable
[Ynasq?] y
error: labview-2020-core-20.0.1-1.x86_64.rpm: invalid signature tag Archivesize (1046)
error: labview-2020-core-20.0.1-1.x86_64.rpm: not an rpm package (or package manifest)

Does anyone know any general strategies for trying to make this work or to identify what the incompatibilities are? I really just want to toy with some things in LabVIEW on my current workstation, rather than setup an EL box just for the one application.


Using some RPM options may or may not help you override the errors:
It would be easier to answer if you provide the problematic package for testing.

I am attempting to install the LabVIEW Community Edition (available at LabVIEW Community Edition)