I'm having the exact same problem - started happening when I was first trying to install the upgrade on my 5DmkII today... Didn't have the right version of Canon firmware and removed the card after install failed. Camera wouldn't start up from ML card after that (Xmas version), nothing would happen until i removed both card and battery, then it would boot into Canon firmware fine.
However, i can't use the older version of ML on my second card either, tells me FONTS.DAT is missing from new version when it's clearly there and camera crashes EOS utility as well...
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Anything we can do to sort this out? Any help would be highly appreciated! Have been loving the Xmas version and was so looking forward to this stable release - can't believe I f***ed it up like this...
Thanks guys!
However, i can't use the older version of ML on my second card either, tells me FONTS.DAT is missing from new version when it's clearly there and camera crashes EOS utility as well...
a
Anything we can do to sort this out? Any help would be highly appreciated! Have been loving the Xmas version and was so looking forward to this stable release - can't believe I f***ed it up like this...
Thanks guys!