Trouble updates plugin

I have just updated my plugin to the latest version but it is still remain in the old version after the update. After I look at http://plugins.svn.wordpress.org/my-press-articles/ it shows that the plugin files have already been updated but when I try to install it, it fails to install and the version number is still remains at version 1.0 as shown here.

http://wordpress.org/extend/plugins/my-press-articles/

Can someone please help me up?