Multiple icons in the "movies" folder

I have reinstalled serviio in a fresh windows setup and then restored my serviio backup folders to utilize my library info. After i ran serviio, everything seemed OK, but for some reason, there are 10s of identical icons appeared in my "movies" folder for each of my movie files. Now, i have like 30 movie files in my hdd but i see more than 100 movie icons listed in the "movies" folder but with multiple icons (3...10 icons) for each of them.

I tried deleting the media folder info in serviio configuration and re-entered the folder paths again, forced refresh of the whole library, re-scanned metadata but i couldn't fix the problem. Do you have any idea how to delete my serviio library info cache and rebuilt again?