Database there, buty not there !

[F6EXV]

Hi all
I save my logs under Pcloud.While working on QSL confirmation, Log4OM stopped working.
Using L4OM version 2.35.1.0 under Win10.
The log file does show under F6EXV in SQLite format, it says 'Cannot find file. Check filename and try again'
When I go to the proper file in PCloud, I erase the file F6EXV.SQLite.
Then I open L4OM, go to Configuration/New, try to create a database called F6EXV (SQLite extension), and I get an error message saying' Cannot find file- Check filename and try again'.
I have erased that file called F6EXV, so why does it tell me it cannot find the file when I am actually trying to create it ?...
Very weird : is the file there, or not there ?

How can I create a file called F6EXV ?

Also, when it previously worked fine, updating a QSL would take a long time (like 15 seconds). Is this normal ?