I ran into this error while trying to add reinforcements using gliders. This occured on the Israeli side when I tried to land various units with gliders. It seems that the glider BMP is missing. Has anyone else ran into this?
It's a software and possibly also a data bug. For CSME 1.02, we are investigating a possible work-around. We will be sure to fix it, no work-around required, for CSME 2.0. Thanks for the bug report!