Starting with that version of The Bat! the name of the database index file is TBIndex.db instead of Index.db. Although we suggest you just update the program and let it do its thing, you can also rename your existing Index.db file into TBIndex.db before starting that version should you wish/need to avoid re-indexing the entire database.
Versions with the auto-update feature:
32-bit https://www.ritlabs.com/download/files…2_11-0-4-14.msi
64-bit https://www.ritlabs.com/download/files…4_11-0-4-14.msi
Versions without auto-update:
32-bit https://www.ritlabs.com/download/files…2_11-0-4-14.msi
64-bit https://www.ritlabs.com/download/files…4_11-0-4-14.msi
What's new in v11.0.4.14 since v11.0.4.12:
[*] New index file names to ensure correct DB structure
[*] Automatic conversation view update when new messages arrive into conversation
[*] Improved performance of database updates during runtime
Thank you!