HTW custom battle problems

[The_Un-Challanged_Empire]

On HTW the first time i start a custom battle its fine but the second onwards, when its loading the map and units, it gets to about a 1/4 of the way then stops then the entire game closes, i have uninstalled it and reinstalled it but it still doesnt work. Campains work fine, just custom battles abit wierd. Can anyone tell me what to do or also has the same problem?
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