I'm also having the same issue. I deleted the docker container as well as the appdata folder and still had the same error persisting. This was happening to me when downloading subscriptions. When I download subscriptions, it brings in various .temp/PART files when downloading and once the download is complete, it simply deletes the download. I made sure all archive logs were deleted so that it would not be recognizing previously downloaded material, however, I could not get the issue fixed. Any idea on this one @Roxedus