Updated*** Dell OpenManage 7.2 on ESXi5 fails with error 15

I was using VMware Update Manager but the method you use to install probably doesn't matter.

This appears to be the package is not signed correctly. Like the rest of you, I am busy so I didn't spend much time finding a fix. I went back to the 7.1 version of the agents and it installed no problem.

Initially I thought maybe the older 6.5 version might have been the problem and uninstalled it. The command to remove the old VIB, which was 6.5 for me, was esxcli software vib remove OpenManageThat didn't solve the problem however so I got smart, putty'd in and looked at the update log located at /var/log/esxupdate.log. I found this:
esxupdate: esxupdate: ERROR: InstallationError: ('Dell_bootbank_OpenManage_7.2-0000', "('Dell_bootbank_OpenManage_7.20000', 'Could not find a trusted signer.')")

I changed Update Manage to push out 7.1 and it installed fine.

If anyone has more info please share!

Hope this helps someone.

Charlie