Server says it cannot find Marketpress


I am trying to install Marketpress to my Wordpress site. This is where I am being sent whenever I attempt to activate the install.

I have deleted the plug in and reinstalled it. That did not solve the problem.

I had the previous version downloaded to my computer before. I uploaded and installed it and was informed there was an update. I paid for the updated version and deactivated the previous version. However, I am not able to get the plugin to work or even become active on the site.

Please help…