DUChain (?) crashes after recent updates.

[David Nolden]

You didn' t answer the important question whether this is a regression or not. 
Did it work before?

Otherwise, you should notice that there is always 2 contexts created from each 
CPP file:
The Proxy-context, which represents a file in one specific preprocessor-
environment, and the content-context which contains the actual duchain stuff 
and may be shared among many proxy-contexts.

updateReady(..) (I think) gives you the proxy-context, so you have to retrieve 
the content-context from it first. See functions like 
contentContextFromProxy(..) or similar, there might also be such a function in 
duchainutils.cpp.

Greetings, David