Re: Restart a Mission or Assignment in Mass Effect 2
Ish packages:
http://masseffect.wikia.com/wiki/Omega:_Packages_for_Ish
Here I found a explanation about this mission bug:
http://gaming.stackexchange.com/questions/52808/how-can-i-complete-omega-packages-for-ish (The last message at the bottom)
Crime in progress:
http://masseffect.wikia.com/wiki/Citadel:_Crime_in_Progress
As I said in the other thread, you should load an old save if you have some issues with these missions as there's actually no patch/update to fix it.