Could you send me the launcher_log file located under C:\ProgramData\Mount and Blade II Bannerlord\logs folder? Please make sure the game is on 1.7.2 and launcher did not work.
You can send your files to us via the ticketing system on the website. To send us a ticket, please visit the www.taleworlds.com site and login to your forum account from the top right. Click to "My Account" and then click to "My Open Tickets". You can create a ticket there and include the save file and as well as the forum link of this thread. You can find more info about how to upload files to us with the new ticketing system here. Thanks for reporting and sorry for any inconvenience!