Ah - thanks for that Iannic-ann-od. I thought that might be the issue when I couldn't find a KSB_Data/output_log.txt I now have one of those, but all my saved games have vanished! Is there any chance of getting them back? Or have they been UAC'd to death? On the plus side, Chatterer now works - thanks again. It would be a shame to lose them, I had one Kerbal on the moon with his arm trapped under the capsule, waiting for someone to come and rescue him....