I did the side mission the big dig up until the door before the last one that everyone has trouble with and when i activated that door sonja the robot just sat there and did nothing and i no longer had the option to blow down that door, so i loaded the last save right before i met with the gang in the dig to redo the whole thing, however this time the robot froze in place and wouldnt even blast open the first door, it has since been about 8 hours of play time and so i came back to it thinking it might be different or something but i still have no option to blast open the first door. Anybody have any suggestions?

did anybody else have this issue? am i just screwed and cant do that mission?

I had a similar issue with the second to last door, but I talked to the guy that owns the robot (his name escapes me right now) and then the quest proceeded as it is supposed to. I know it's a bit late but I figured I'd try and help. Cheers!

You have to talk to the guy that owns the robot for the last door and bobbie no pants