Okay I’m slowly getting somewhere, it might be because of an error in your logs that I thought was not important:
Command failed: C:\Windows\System32/wbem/wmic logicaldisk where "DriveType=2 or DriveType=3" get Name,VolumeName,FileSystem /format:csv
Ung�ltiges XSL-Format (oder) Dateiname.
That command checks what drives you have on your computer and because it fails, it isn’t able to figure out what tracks belong to your drive, so it exports 0 tracks.
Can you try the instructions in this article? Fix the “Invalid XSL format (or) file name” Error — The Geek Blog
After doing that, restart Lexicon and you can check the log file if the error still happens. Log locations are here: Lexicon database & log locations