this might be a case of database corruption. I'm not sure how the modifier got set. also you've got 10 missiles in Ross 248 with seemingly unlimited endurance, might be related. trying to advance 5 days now to see if that clears up the issue, but you'll probably have to get someone with the DB password to look at the save. the 1% economic production modifier is definitely the culprit, but I'm not sure of what causes that. likewise there are an awful lot of civ freighters registering trouble loading and unloading right around when the trouble started.
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Update: deleting the missiles hasn't accomplished anything, same for clearing civilian freighter orders.
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