Edit book: cannot create new empty book when extension is not specified in the file
Cannot create a new eBook in the new eBook editor component.
Steps to reproduce:
1. Open Edit Book program (I open it separately, not within Calibre, but Calibre is also running).
2. File -> Create new, empty book
3. Title: Test, Author: Test, Language: Russian
4. Press EPUB button
5. Chose location of the file as test (no extension specified, but it is not obvious that user should specify extension: after all I already pressed EPUB button earlier, correct?)
6. Press OK
The following error gets displayed:
calibre, version 1.22.0
ERROR: Unsupported format: Tweaking is only supported for books in the AZW3 and EPUB formats. Convert your book to one of these formats first.
Calibre Version 1.22
Linux 3.8.0-35-generic #50-Ubuntu SMP Tue Dec 3 01:24:59 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Dell Inspiron N4010