Thumbs not showing on one of my phones

[HYBRID-BEING]

I'm trying to migrate BakaReader Ex from one of my phones (ASUS Zenfone 2, Android 5.1.1) to another (ASUS Zenfone Selfie, Android 6.0.1). Something seems to be wrong, though - no matter what i try, thumbs don't seem to work on my new phone and all i see is placeholders (sometimes with alt text, sometimes not).

I've tried:

• Moving data with Titanium Backup (TB) to a fresh installation of BakaReader Ex or one restored with TB (1.1.37, yeah, first time i actually tried to migrate was more than 4 years ago).
• Moving data/com.erakk.lnreader manually to a fresh installation or one restored with TB (1.1.37).
• Making novel database and images backups and importing them in a fresh installation or in one restored with TB (1.1.37). Images backup doesn't seem to back up thumbs, actually, only full-res images - trying to make an image backup when "Process All Images" is disabled gives me "Failed to zip files: No entries" error. Manually copying thumbs (which are stored directly in /files/project/ directory) afterwards didn't help.

I've also tried to relink images after every thing i tried, but it didn't help - it always said that 0 images were updated. I took a look in the log files (here's one), and i didn't see anything there concerning thumbs.

[HYBRID-BEING]

So, i've tried updating my Selfie to LineageOS 15.1 (Android 8.1) - made no difference.

I also checked the fresh installation and noticed that thumbs are placed into the /files/project/thumbs directory (sorted in single-character-named folders by filename's first character), unlike on my Zenfone 2. So i tried batch renaming the files into corresponding format and putting them in corresponding folders, but that didn't help either.

Here's what i have, every thumb is just like that. Covers are okay though, surprisingly.

[Nandaka]

hiya, the apps not actively developed anymore. I'm using https://novelupdates.inverse.cc/ now

[HYBRID-BEING]

Yeah, i did notice that was the case, but i've got some novels downloaded that were C&D'd, and wanted to preserve those, at the very least. This seems very weird to me that everything works fine on old phone, yet fails to work on a newer one. Maybe there is some other log i can look at to try to figure this out?

[HYBRID-BEING]

Oh boy, i think i actually resolved my conundrum.

I've been juggling files around and it finally hit me that if BakaReader doesn't fix thumbs in the database for me, then i just need to do it myself. So i got myself DB Browser, opened up pages.db, found the table of interest (novel_books_content), extracted it into CSV and instantly noticed that most of the thumbs have paths like file:///storage/sdcard0/Android/data/com.erakk.lnreader/files/project/thumb.php_f=High_school_DxD_Volume_19_Cover-Mini.jpg&width=85, while few have something like file:///storage/emulated/0/Android/data/com.erakk.lnreader/files/project/thumb.php_f=C3_01-Cover.jpg&width=82. Turns out some of the thumbs actually worked on my Selfie! But latter work on the Zenfone 2 as well - i've checked directories and it seems that, unlike on Selfie, /sdcard0/ and /emulated/0/ were symlinked. A few regexp replaces later, i have a CSV with paths changed to /emulated/0/ (also, changed weird php names to /thumbs/N/Name-XXpx.ext, while at it), imported it into the db file in place of original table (don't forget to set attributes as they originally were, or BakaReader will slow down to a crawl!), and, voila, thumbs are present once again.

Though, i think there might be some weird files left like file:///storage/emulated/0/Android/data/com.erakk.lnreader/files/project/thumbs/C/CtG_v02%3F-84px.jpeg_. The actual file was saved as CtG_v02_-84px.jpeg_, so BakaReader doesn't pick it up.