Forum:Trouble with Antibaar dropship

I am having trouble getting the dropship to come after taking out the outpost on antibaar (PC version). The other three bases worked fine. I have taken out all of the troops there, and I hear the dropship noise, but no dropship appears, so I cannot clear the base and move forward with the geth incursions quest. If I return to Normandy and drive back to the area, I get the dropship noise again upon approaching, but still no ship and no completion. Is there a fix for this? Is this a known issue? I didn't turn anything up in my searching.