Since the Internet connection or similar can also be a problem, you should wait a little before taking any action!
The following steps are generally harmless and very often lead to success if the problem only occurs during packing:
- For security reasons, make a backup of the entire working directory of the affected content (e.g. the map subfolder within the map working directory set in the MapEditor options)
- Switch to the export subfolder
- There you should find the file "LOTUScontdescr" - delete it!
- Try again to save and pack the affected content. The tool will create a new file with the same name.
If the content is "swapped back", the problem may occur again with the other author. Then simply proceed again as described.