0.6.1 breaks conversion by Calibre
When converting EPUB to EPUB with Calibre, the presence of a non-breaking space [ ] in a given file causes the CSS file path in the <head> of that document to point to the wrong place.
On opening the document with Sigil I get
The following errors occurred when loading the EPUB:
Not well formed, Cannot perform html updates: myfilename1.xhtml
Not well formed, Cannot perform html updates: myfilename2.xhtml
Correcting the CSS path then gives this error
entity 'nbsp' not found
Removing all cures this completely but I find them useful for indenting the occasional line in a poem or other minor positional adjustments.
This did not happen in 0.6.0