Sorry Paul, my mistake! It does indeed fix the problem if you delete the plugin from the plugins folder. The client had 2 different url’s pointing to 2 different copies of the website, so had to resolve that issue and delete it from the correct site.
I upgraded today and it took a whole site down! I deleted the plugin from the plugins folder, and still get the error message.
BackUpWordPress will not work on this site. ( PHP Version 5.2.17 is unsupported )
What can I do? The site will not load and is needed ASAP!