I just released V126 with the following changes:
Fixed a freeze bug when path finding would freeze on jumbo planets if really long paths (>256 tiles) were found.
Seeing that people playing the Jumbo sized planets are my paying customers, I feel really bad for the fact that the jumbo planet was less stable than the normal size.
Hopefully, playing jumbo size is now as stable as the large size.
My thanks go out to Mr Woodchuck for helping me track down the issue.