I recently tried installing Dell Appassure Replay Core on a client’s server and received this error message:

Installation failed with error: 1. Bad state (invalid stored block lenghts)

At first I thought this was going to turn into a nightmare and I was about to phone Appassure support, when I Googled the error message.  I couldn’t find any information about this error pertaining to Appassure, but I did find a solution.

This seems to be a generic Windows Installer error that indicates that the installation media is corrupt.

I simply downloaded the installation files again, and hey presto it worked.

So if you get this error message I would suggest that you just try downloading the installer again.