A friend of mine had this problem (crash uppon loading) with a training map which was installed on Hougoumont. When the map was changed to another name, the problem disappeared. Actually he had a problem with Hougoumont in general. He also told me that on the new N&S version he has this problem with 2 or 3 maps. I don't know what's the cause of this problem, but this information could help investigate.