I fixed mine. I deleted the old plug in files and directories. I then downloaded the newest version and installed from a clean zip file. Activated no problem.
I am having the same problem on two new WP installs.
Parse error: syntax error, unexpected T_IF in /home/dennisse/public_html/dennishyundai/wp-content/plugins/seo-ultimate/modules/author-links/author-links.php on line 1
