Hi all, I'm trying to make a deserialization user cancellable, and I thought, hey, if I throw an exception in a progress handler (used when reading chars from input stream), that would propagate through the load hieararchy and I can catch it at top level... Nope... it gets caught in iostream (VS2012, row 776) :( , so the _CATCH_IO_END is probably a catch(...). Not very nice, and quite counter-productive if you ask me. Any ideas how to get that exception out ? Regards /Robert