When downloading from https://www.tumblr.com/liked/by/[blog_name] , I noticed that only images and videos were being saved. I created a new folder for the Download location and only checked the following:

It took several attempts (kept losing authentication), but it finally started the download. The download completed and created the Index and blog_name folder, but the blog_name folder is empty.

The index folder has the following files
{
"BlogType": 4,
"Entries": [ ],
"Location": "D:\Tumblr_backup4\Index",
"Name": "blog_name",
"Updates": null,
"Version": "6"
}

{
"Answers": 0,
"AudioMetas": 0,
"Audios": 0,
"BlogType": 4,
"CatBoxType": 0,
"CheckDirectoryForFiles": false,
"ChildId": "D:\Tumblr_backup4\Index\blog_name_files.tlb",
"CollectionId": 0,
"Conversations": 0,
"CreateAudioMeta": false,
"CreatePhotoMeta": false,
"CreateVideoMeta": false,
"DateAdded": "/Date(1744426434194-0400)/",
"Description": null,
"DownloadAnswer": false,
"DownloadAudio": false,
"DownloadCatBox": true,
"DownloadConversation": true,
"DownloadFrom": null,
"DownloadGfycat": true,
"DownloadImgur": true,
"DownloadLink": false,
"DownloadPages": null,
"DownloadPhoto": false,
"DownloadQuote": true,
"DownloadRebloggedPosts": true,
"DownloadReplies": true,
"DownloadText": true,
"DownloadTo": null,
"DownloadUguu": true,
"DownloadUrlList": false,
"DownloadVideo": false,
"DownloadVideoThumbnail": false,
"DownloadWebmshare": true,
"DownloadedAnswers": 0,
"DownloadedAudioMetas": 0,
"DownloadedAudios": 0,
"DownloadedConversations": 0,
"DownloadedItemsNew": 0,
"DownloadedLinks": 0,
"DownloadedPhotoMetas": 0,
"DownloadedPhotos": 0,
"DownloadedQuotes": 0,
"DownloadedTexts": 0,
"DownloadedVideoMetas": 0,
"DownloadedVideos": 0,
"DumpCrawlerData": false,
"DuplicateAudios": 0,
"DuplicatePhotos": 0,
"DuplicateVideos": 0,
"FileDownloadLocation": null,
"FilenameTemplate": "%f",
"ForceRescan": true,
"ForceSize": true,
"GfycatType": 0,
"GroupPhotoSets": true,
"LastCompleteCrawl": "/Date(1744426676023-0400)/",
"LastId": 0,
"Links": null,
"Location": "D:\Tumblr_backup4\Index",
"MetadataFormat": 0,
"Name": blog_name
"Notes": null,
"NumberOfLinks": 0,
"Online": true,
"OriginalBlogType": 4,
"PageSize": 50,
"Password": null,
"PhotoMetas": 0,
"Photos": 0,
"PnjDownloadFormat": "png",
"Posts": 0,
"Progress": 0,
"Quotes": 0,
"Rating": 0,
"RegExPhotos": true,
"RegExVideos": true,
"SaveTextsIndividualFiles": false,
"SettingsTabIndex": 0,
"SkipGif": false,
"States": 1,
"Tags": null,
"Texts": 0,
"Title": null,
"TotalCount": 0,
"UguuType": 0,
"Url": "https://www.tumblr.com/liked/by/blog_name",
"Version": "4",
"VideoMetas": 0,
"Videos": 0,
"WebmshareType": 0,
"ZipCrawlerData": false
}

I'm currently using TumblThree version: 2.18.0.481 on Windows 10 Pro