Hello,
Could you try to delete these folders ("reports" and "stats") from the folder where your corrupted database is stored, by default here C:\Users\AppData\Roaming\Hand2Note\Databases\Corru pted database:
Then launch Hand2Note -> try to switch to the corrupted database -> click on Build Statistics:
If it doesn't help, you'll have to delete the entire database, unfortunately.
But you can restore all played hands by importing the following folders C:\Hand2Note4Hh\ and C:\MyHandsArchive_H2N4\ to your new database