[bigeyes]

I have a newest generation Kindle Oasis with the latest firmware. I have downloaded a magazine using Calibre in Mobi format that used to work just fine on older units and until recently seemed to work just fine on the Oasis using a recent version of Calibre. I just sideloaded the Mobi file to the Kindles.

Today I was unable to get the Kindle to recognize the Mobi file. I tried the standard trick of restarting the Kindle, but no luck. It looks like the Oasis did standard conversions of the Mobi when I looked in the document file; but nothing showed up when I looked in the library. Oddly enough the library seemed to know there was a document to be read; because there was a number in the bottom left corner. But opening the folder did not show any documents.

I was able to convert the original file to AZW3 and was able to read that. I tended to like the way the menu structures worked for the magazine in Mobi format. To be specific I liked the ability to get a table of contents by clicking on the top part of the page

I did experiment with doing the downloads in Caibre in both EPUB and MOBI formats but that made no difference.

Any suggestions or thoughts on what may be going on?