I think i found out the problem, there was to many projext i had started and screwed up in the Map_source Folder, i removed a dozen or so and then the programe stared running again.
Thats an interest find, how many maps did you have, as with CoD2 I had 100's of maps in the folder without issue.
In your preferences inside codradiant, make sure it is set to NOT load your last map, it can cause load issues.
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