Error after updating

Hi! I had the 2.5 version on my 3.5.1 wordpress which was working without any problems. Today I updated to 2.6 and I got the following error when I entered in the option section of the plugin:

Warning: is_dir() [function.is-dir]: open_basedir restriction in effect. File(/home/mario/public_html/mywebsite.com/wp-content/plugins/mechanic-visitor-counter/styles/image/computer/2.gif/) is not within the allowed path(s): (/home/:/tmp:/tmp/mysql.sock) in /home/mario/public_html/mywebsite.com/wp-content/plugins/mechanic-visitor-counter/wp-statsmechanic.php on line 43

There are many indentic lines, the only difference between them is x.gif (all the gifs)

I googled for this and I didn’t find any solution. If you don’t know what is wrong, can you please give me a link to the 2.5 version?
Thank you!

http://wordpress.org/extend/plugins/mechanic-visitor-counter/