This isn't the first time I've heard about mini-missions not working right. I've had trouble with some when I let a bunch of time expire before completing them, or completed them out of order. I've only been able to complete the 'take boba fette to hoth and neutralize a hero' mission one time out of four, but that one doesn't stop me from completing the campaign.
Gary Swift (aka gswift)
Lenexa, Kansas USA
You can try to monkey-proof your program, but you'll never monkey-proof the monkey.