[Zastava]

The scanner must work in a bullet-proof way. I need a debug log as instructed in the first post to track the problem. 

@Wintermute0110 here: https://paste.kodi.tv/uyolidijaw.kodi

And thank you so much again in advance.

For this test just scanned again the Commodore Amiga launcher and it just duplicated the same games/roms already there. Maybe it's related to using a portable version of Kodi, assets included per your instructions before.  

Yes, having a portable installation is affecting the scanner. For example, the game Agony (Europe).zip is currently stored as

Code:

special://home\..\..\..\..\..\collections\Commodore Amiga\roms\Agony (Europe).zip

but in the current scanner the file name is

Code:

D:\Frontends station\frontends\Kodi_test\App\Kodi\portable_data\..\..\..\..\..\collections\Commodore Amiga\roms\Agony (Europe).zip

You must change the ROM path from the current

Code:

ROM path "D:\Frontends station\frontends\Kodi_test\App\Kodi\portable_data\..\..\..\..\..\collections\Commodore Amiga\roms"

to

Code:

ROM path "special://home\..\..\..\..\..\collections\Commodore Amiga\roms"

That should make the scanner to work correctly.  

The weird thing is that I already have that in the launcher settings, the portable paths. But it seems the scanner always put absolute paths to files after scanning. Then I need to change them in AEL related files to relative/portable as you show. So maybe it duplicates the files that were already scanned before because it doesn't recognize the portable paths?