Your comments

well, looks like a memory issue

20200327 15:12:50 [Scanner thread] WARN com.ubooquity.data.database.a - Could not find id of root path D:\test (ignore this warning if you just added a new root directory)
20200327 15:12:50 [Scanner thread] INFO com.ubooquity.data.database.a - Inserting/updating book entry in database : D:\test
20200327 15:12:50 [Thread-6203] INFO org.eclipse.jetty.server.Server - jetty-9.4.0.v20161208
20200327 15:12:50 [Thread-6203] INFO o.e.j.server.handler.ContextHandler - Started o.e.j.s.h.ContextHandler@bee218{/,null,AVAILABLE,@admin}
20200327 15:12:50 [Thread-6203] INFO o.e.j.server.handler.ContextHandler - Started o.e.j.s.h.ContextHandler@c55ec1{/,null,AVAILABLE,@library}
20200327 15:12:50 [Scanner thread] INFO com.ubooquity.fileformat.pdf.b - Reading metadata of pdf file: D:\test\Player's Handbook [Remastered+Deluxe][10th Print].pdf
20200327 15:12:50 [Thread-6203] INFO o.e.jetty.server.AbstractConnector - Started library@5ffe85{HTTP/1.1,[http/1.1]}{0.0.0.0:2202}
20200327 15:12:50 [Thread-6203] INFO o.e.jetty.server.AbstractConnector - Started admin@11a2b52{HTTP/1.1,[http/1.1]}{127.0.0.1:2203}
20200327 15:12:50 [Thread-6203] INFO org.eclipse.jetty.server.Server - Started @361406037ms
20200327 15:12:50 [Thread-6203] INFO com.ubooquity.b - Internal server started. Listening on port 2202 (library) and 2203 (admin)
20200327 15:12:55 [Scanner thread] ERROR com.ubooquity.data.feeder.a - Failed to insert D:\test\Player's Handbook [Remastered+Deluxe][10th Print].pdf
java.lang.OutOfMemoryError: Java heap space

Hmmm. There must be something else at play then, yes. It should be right there next to the alpha draft, but it is not. It also only shows 34 books in the folder, but there are 51. I am not sure what is happening

oh hey. sorry. Here is a link. I have about 17 books in one of the folders that are not showing, this is one of them. I have a LOT of other folders and I am not sure how many others are missing

https://1drv.ms/b/s!AsH400huh6YUwNY439ZjKjJSetEsBA?e=X4UlSF

nope. I renamed one of the books to "foo.pdf" I also checked the pdf properties, and there is nothing weird. It shows up in the scan, but does not get added to the books db.

also verified that its not a symlink (though apparently many of the books in my library are)