Hello, Congrats on the BaseX 12.2 release! It seems that I bumped into a minor issue on a machine with MS Windows OS. My XQuery is using SQL module, and for that I am using Microsoft JDBC Driver for SQL Server. In particular, its mssql-jdbc-13.2.1.jre11.jar file needs to be in the ~basex\lib directory. It looks like that in-place update from the BaseX 12.1 to BaseX 12.2 deleted the ~basex\lib\mssql-jdbc-13.2.1.jre11.jar file. I received an error message. The solution was very simple, I copied the missing mssql-jdbc-13.2.1.jre11.jar file to the same location, restarted the BaseX GUI, and database calls started to work again. As a test, I deleted Microsoft jar in the ~\basex\lib\ and copied it to the ~\basex\lib\custom\ And database calls started to work again. The documentation says the following: "..If you work with the full distributions of BaseX, you can copy the driver into the lib directory..." https://docs.basex.org/main/SQL_Functions IMHO, it is better to update BaseX documentation, and recommend to copy JDBC *.jar files to the ~\basex\lib\custom\ directory. This way JDBC drivers will survive BaseX updates in-place. Regards, Yitzhak Khabinsky