I'll be upgrading with the hope the fix is in the updates, although the trouble I am having is interesting. If I simply upgrade the IS Pods with Clan Pods of the same weapon, making the omni and IS Mixed mek, as has been suggested, it works without issue. The issue occurs when I decide to also reconfigure the weapons load. At that point the issue is where the changes get made, but the C-bill value drops a lot, and although the mek is usable once, it cannot be repaired, only salvaged. I was planning on restarting my AtB campaign anyway, so if I lose the files, I'm not overly concerned. I'll let you know if it works....