Have you ever experienced the 0xe0434f4d exit code and thought, what the heck is thatTess has a nice blog If broken it is, fix it you should which in a post explains how to interpret the exit code which is very good. 0xe0434f4d means that it is an exception from the CLR, ie any managed exception is referred to with this code. And she also explains what the funny 0xe0434f4d means:0x43 0x4f 0x4d are the ASCII codes for COM!