SVN commit does nothing

I run this problem when I tried to commit new folder with some files in my google code repository. I use svn command line from CollabNet Subversion in my windows OS. I accidently found a solution with running a command:

svn commit -m ''

By using commit with empty message has solved my problem :)

It seems the correct one is to use "" (double quotes) when commit something like

svn commit -m "fixed bugs"