After upgrading the old version to the latest version, if you encounter a player whose technology cannot be developed or whose progress bar is stuck, you can try to create a new archive. If not, it is recommended to turn off the steam cloud archive function of mobile Empire, turn on the hidden file display of windows, and then delete all files under C: \ users \ your computer name \ appdata \ locallow \ Huanzhen \ mobileempire. If it still cannot be solved, you can add this bug to feed back QQ group 1031947214, contact the administrator, and we will help you deal with it. This problem is caused by database conflict and cannot be solved by the repair program at this time.