On the right of this field is a button. Click on it and select the file of your Log4OM file
that has the extension of .SQLite - you have to find the location, most probably where
you have installed your Log4OM.
"I have a file MySQL.data.dll" - this is a .dll file. a DLL is a part of a programm (library)
and not an SQLite database.
https://en.wikipedia.org/wiki/Dynamic-link_library