Problem with map mapextractor 9.1.0 build 39653

Hello,

I have build from this branch, however mapextractor is throwing error when trying to use it in Scarlet-WoW_9.1.0-build_39653_full_client.

Extracting maps…
Read Map.db2 file…
Fatal error: Invalid Map.db2 file format! UNKNOWN
Failed to read header