http://bugs.winehq.org/show_bug.cgi?id=19564
--- Comment #8 from Juan Lang juan_lang@yahoo.com 2009-08-05 11:07:14 --- Ah, right, msxml6 is only native, eh? From the log:
fixme:secur32:schan_QueryContextAttributesA Unhandled attribute 0x53 wine: Unhandled page fault on read access to 0x00000004 at address 0x4 (thread 001a), starting debugger...
You're almost certainly right, it's trying to dereference a NULL security context. 0x53 is SECPKG_ATTR_REMOTE_CERT_CONTEXT. That's also implicated in bug 19517, so I'd say that one's worth implementing.