Install plugin loop

When trying to install certain plugins it redirects me to this website where i click install on the plugins page, it then popd up and asks which site, i choose the site, it redirects me back to my site, the WPMU pugin page where a pop up opens and it has an option to download the plugin. I click download plugin and it takes me back to the page where it pops up and and i have to click install, then a choose a site.

I have done the loop over and over and it never installs anything, around and around i go.