Example code to generate error:
#include <atlcoll.h>
class Buggage18_Jan_05 : public CRBMultiMap<CNodeEx, CNodeEx>
{
POSITION CRBMultiMap<CNodeEx, CNodeEx>::Insert( KINARGTYPE key, VINARGTYPE
value );
};

Clicking line in Task List and pressing F1 brings up help for Task List
Windows instead of C3240. C3240 is in fact not in the help at all.

Microsoft Visual C++ .NET 69461-335-0000007-18039

[quoted text, click to view]

The only current reference for that error I can find is:

http://msdn.microsoft.com/library/en-us/dv_vcce4/html/everrcompilererrorcthrtwofouzer.asp

However it does appear to be documented for VS2005 B1:

http://whidbey.msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_vccomp/html/1a8dc213-b80c-47ae-ada0-e9554b635d1e.asp