Thanks, I updated to the newest version and the summaries are back.
For the line break problem, it may not be a problem for others but I find it difficult to read. Download any story as a *.RTF file. I used
http://www.fanfiction.net/s/4171430/1/ as a sample. I'm uploading a screenprint so you can see what I mean. (I also added a note about an extra space before each line in the header... that is just me being picky and because I am a little OCD, I usually remove each space manually.

This extra space only started appearing a few weeks ago, maybe in version 0.5.0?) The second attachment is the same sample but with the paragraph marks turned on. After downloading a *.RTF file, I run a macro which replaces all the single paragraph marks with double marks and then deletes all the TABS at the beginning of each paragraph. I'm not sure if others enjoy this feature but I find it difficult to read since so many paragraphs in fanfic are just one sentence lines.
In regards to your other questions, I am using the "small" 5MB version of FFDownloader and version 0.8.40 of Calibre, though I just upgraded to 0.8.41 this morning.
Please let me know if you need any more info!

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- sample2.jpg (211.94 KiB) Viewed 13419 times