On 30/04/2014 7:30 a.m., Alex Crow wrote: > dying from an unhandled exception: c I just realised what is generating this is a "Must(c)". There are only two of them Squid, but unfortunately in the generic and widely used CbcPointer template. Can you apply this patch please and see if we get a useful backtrace next time: http://www.squid-cache.org/Versions/v3/3.HEAD/changesets/squid-3-13386.patch (this will also be in 3.4.5 to help with future issues hidden by the same message). Amos