Hi,
I've seen it twice now: two old bottles with Steam on them, I bring them into CX11, bam, can't run Steam anymore, it just crashes shortly after displaying itself.
I haven't tried all my steam bottles (about a dozen?), but it would be painful to have to redownload Gigs of games because of this.
I've left one of the buggy Steam bottles alone, hoping that I can run some tests on it. Any ideas what to try?
Edit: I should mention that I ran it with +ntdll and +seh, but nothing jumped at me as significant.