Here is Soluton of The Following Problem:
A Person Using WordPress WebHost, When Activates All in One SEO Pack, See an Error on the Screen as Follows:
(Fatal Error: *wp-content/plugins/all-in-one-seo-pack/aioseop.class.php on line 3)
This is Because of Another SEO Plugin Activated.
To Remove This Error Follow Some Simple Steps:
Step 1: Login into your WordPress Dashboard.
Step 2: Go to Plugins (On the SideBar in WordPress).
Step 3: In Installed Plugins, Search for Plugin named “WordPress SEO”.
Step 4: Click Deactivate (Written Just Below “WordPress SEO”)
Step 5: Now, Search for Plugin named “All in One SEO Pack” and Click on Activate/Install.
Your Plugin is Activated