I recently purchased a PIX 515 with 6.1 IOS and Version 1.0 of the PDM. I installed and configured for PDM and Ireceived a message stating that with IOS 6.1 I had to use PDM version 1.1. So, I downloaded and TFTP'd the new version of PDM into the PIX. Everything went fine - I saw the progress of the install but when it finished installing it said "This is not a valid PDM file" "This file was not installed" Anybody got a clue?