Mine was instantly closing too. first time setting it up. turns out i copied the path wrong for the 3 files. I was simply using the shift+right click. and then pasting. this would add extra quotation marks in notepad. I deleted the extra pair of quotations, and also made sure I changed every single backslash to forward slash. It works now.
It mostly worked* I got this error for one account, specifically making one key video unable to be downloaded:
Error getting file size for URL 'https://cdn2.onlyfans.com/files/b/b1XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX_source.mp4?Tag=2&Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6XC9cL2NkbjIub25seWZhbnMuY29tXC9maWxlc1wvYlwvYjFcL2IxY2NlNGMxZmY0Zjg0MTZhY2Q4ZTk2ZTYxMzU3NTI4XC8waDZ1d29mcHVicWkybmJ4bWQyYWRfc291cmNlLm1wND9UYWc9MiIsIkNvbmRpdGlvbiI6eyJEYXRlTGVzc1RoYW4iOnsiQVdTOkVwb2NoVGltZSI6MTY4NTkyNjMzNH0sIklwQWRkcmVzcyI6eyJBV1M6U291cmNlSXAiOiI0NS44OC4xOTAuODdcLzMyIn19fV19&Signature=aEpCb~kW-pC2fPe72t9xZrG09v~4GxPT22FXhbFWgVzohj3vuMiX2koXpS3q6A3mzWAsgNLXs33TCt3901RvuE27b8Frl8HsHpM77wy5Jn85ItNNBFSserjVWql31IviH5ATk2XEGjVhjYonPUq5LfG6k~ESPo1ZLkoXkv3rFeAK7xSevpsNs1EMF4zdVpxqcnKqhF1MoEp4EYz4hR~qxTovRtl2wYwCdu6yxoxskDmujPbi6uNYqgQDKl8M~24BRDuZXwSFxC2WVeqAyDezdJs7e~G0WRptTYTVtDri4TRFnYf4HcoprJ7Vgh9rRjJX4kldsD3zouocynB6o~TQCw__&Key-Pair-Id=XXXXXXXXXXXX: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. (cdn2.onlyfans.com:443)
I'll make a new release later with some potential fixes, I've realised a few things that could be causing the error when it comes to downloading some DRM videos.
Any sort of error like that is most likely because of hitting a rate limit because in order to display the total size with the progress bar it needs a value in bytes so it needs to go through each URL and get the size of the file which on large profiles can probably make 1000's of requests in a short amount of time, I tried to combat this by sending the requests in blocks and then wait a few seconds before making any more, in the next release I'll change how many it sends per block to see if that helps
I mean if you could, delete the metadata folder and re-run the script on the profile and if you could, screen record the folder where the stuff is meant to be downloaded whilst it's downloading stuff, it would help to see if anything is downloaded and if what I have done to potential fix the issue will actually work.
It should always grab the best quality as its using yt-dlp to download the video and audio, I will force it to grab the best every time just in case in the next release which will be coming today at some point with some other stuff.
If you're getting stuck just message me with what you are struggling with and I will be more than happy to help you