I upgraded this morning to 0.6.14, but I'm having problems importing files.
It's a weird error, which only happens when importing groups of files - not standalone ones. The program imports the files but gives a warning. It doesn't seem to be tied to a particular file format, and I wasn't able to reliably replicate it...
For example I was importing a LRF, 2 HTML and a PDF file. First time it imported them OK, but opened 6 waring popup windows. Then I deleted them from Calibre, re-imported the very same files again as a group, and everything went fine.
Here's the popup window which appears:
Ideas?
EDIT: I've been able to obtain the warning even adding a single file instead of a group of them - it just happens much more rarely with single books...