An error occurred while parsing the CSS & one other

Hello,

I uploaded an ebook to Smashwords' premium catalog, which initially passed, but then came back with the following errors:

File: [OEBPS/Text/cover.xhtml], Line: [12] Position: [48]
Issue: [An error occurred while parsing the CSS: Token '{' not allowed here, expecting :.]

and

• Warnings reported are/is:
File: [./tmp/uploads/1466112786706_0000297953/inputFile/the-little-book-of-icelandic.epub/OEBPS/Images/The Little Book of Icelandic.jpg(-1,-1)], Line: [-] Position: [-]
Issue: [Filename contains spaces, therefore URI escaping is necessary. Consider removing spaces from filename.]


-- Can anyone help me decipher these messages? I haven't a clue what this is about.

Thank you!

Alda