Ok, now after I got the above error, I pressed back button on browser and went to plugin library. I was able to activate the plugin 1st, then click install
http://gyazo.com/355fd2828ee0478206c56a01ad857f3e
When I clicked install it gave below option and was installed successfully.
http://gyazo.com/fb5fd5eac5d44d8c8a113da6013d2346
http://gyazo.com/639f8db6a5e938c2e395b6574b06d432
After installation I was taken to this screen:
http://gyazo.com/221dcf86e6848bf7446cc3d5d44ea62f
I went to upload plugins and this screen below, which showed plugins I previously had installed when I first tried installing simple-press a few weeks ago, but came into errors, thus I am now re-installing.
http://gyazo.com/296c053da47ec833d1517de9f6426be2
I deleted all of these plugins, and used the plugin uploader to upload the file uploader plugin below:
http://gyazo.com/9a119b552c95b35a61fb7d973c1b5e60
Once I tried to activate this plugin, it took me to the below page, which causes errors:
http://gyazo.com/99ca71f5fee89276102bd7cdbf820cb0
1. The remove button does not function
2. The hover menu drop down no longer works on the leftsidebar of the admin panel
3. Links in the Forum tab do not work and all clicks lead to above page.
None of my other plugins are activated, while this has happened.