[Nadrek]

Not fully verified: When converting an (English) HTML (Zip) ebook to EPUB, it appears that the fancy typographical symbols like
… “ ” ’
aren't making the conversion; they just vanish. I looked at some previously converted ebooks, and they appear to have been converted at the time.

I've left all conversion settings at defaults.

Consistent (and worked with 0.7.20):
Select more than one TXT or HTML (Zip) ebooks, attempt to convert to EPUB. Every single one throws up its own message box error.

ERROR: Conversion Error: <b>Failed</b>: Convert book 1 of 2 (eidolons)

Here's an example from a pair of TXT ebooks I just dragged and dropped, then tried to convert, just to keep things simple:

Convert book 1 of 2 (eidolons)
Python function terminated unexpectedly
  (2, 'No such file or directory') (Error Code: 1)
Traceback (most recent call last):
  File "site.py", line 103, in main
  File "site.py", line 85, in run_entry_point
  File "site-packages\calibre\utils\ipc\worker.py", line 107, in main
  File "site-packages\calibre\gui2\convert\gui_conversion.py", line 24, in gui_convert
  File "site-packages\calibre\ebooks\conversion\plumber.py", line 791, in run
  File "site-packages\calibre\ebooks\conversion\plumber.py", line 743, in setup_options
  File "site-packages\calibre\ebooks\conversion\plumber.py", line 712, in read_user_metadata
IOError: [Errno 2] No such file or directory: u'c:\\users\\phall\\appdata\\local\\temp\\calibre_0.7.21_tmp_hzhk7s\\cover.jpg'

ERROR: Conversion Error: <b>Failed</b>: Convert book 2 of 2 (diesirae)

Convert book 2 of 2 (diesirae)
Python function terminated unexpectedly
  (2, 'No such file or directory') (Error Code: 1)
Traceback (most recent call last):
  File "site.py", line 103, in main
  File "site.py", line 85, in run_entry_point
  File "site-packages\calibre\utils\ipc\worker.py", line 107, in main
  File "site-packages\calibre\gui2\convert\gui_conversion.py", line 24, in gui_convert
  File "site-packages\calibre\ebooks\conversion\plumber.py", line 791, in run
  File "site-packages\calibre\ebooks\conversion\plumber.py", line 743, in setup_options
  File "site-packages\calibre\ebooks\conversion\plumber.py", line 712, in read_user_metadata
IOError: [Errno 2] No such file or directory: u'c:\\users\\phall\\appdata\\local\\temp\\calibre_0.7.21_tmp_hzhk7s\\cover.jpg'