Thanks for replying. Here is the link to the KSP log: https://www.dropbox.com/s/k6zajn2a4kwwmoy/KSP.log?dl=0 I have tried to remove the mods that I suspect caused the problem but that did not help. Attempting to recover from the tracking station was unsuccessful as well. I've tried that a number of times. After clicking on the recover button in the menu, the mission summary pops up. When I click done, I can still see the vessel in the tracked objects.