That sounds like a possible runtime-library problem. Can you switch both your application and the dll to use the dynamic C++ runtime?

Yes, thanks. The problem is fixed! Best regards, mmoges _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com