ebook covert Recipe to .mobi in cmd error

Hello

I tried to do ebook-convert *.recipe *.mobi using cmd.
But conversion process always stops with errors saying as below:


File "site-packages\calibre\ebooks\conversion\plugins\mobi_ou tput.py", line 242, in write_mobi

File "site-packages\calibre\ebooks\mobi\writer2\main.py", line 60, in _call_

IOError: [Errno 13] Permission denied: u'C:\\program files (x86)\\calibre2\*.mobi'

How can this be solved?

Thanks