Two relative threads in Bugs you should probably look at:
viewtopic.php?f=47&t=69964#p873775 Seems an issue similar to yours with what you've given for information. The discussion does get a bit technical.
viewtopic.php?f=49&t=69965&hilit=command#p873897 Check my post here to see if you can find a crash log. If not, a bit later in the thread are some more hints as to what you can try to do to get Haven to run.
If neither of these are helpful, we'll need more information in order to help you resolve any problems.
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