Can't install EasyBlog

I just purchased EasyBlog and it won't install either using Upload Package File or Install From Directory (I uploaded the zip file to the foider /tmp/easyblog) - see attached screenshots. I have download the package again in case it was corrupted and retried but with the same result.

This is on a Joomla 2.5.19 site (PHP 5.2.17)

Please advise how I can resolve this.

Thanks

Jon