Error when trying to create new pro

[anazmi]

Getting this error when trying to create a new product:

 

This link_rewrite field is required at least in English (English)

 

Also not sure if they are related but I also get this error when i enter the products page:

 

Tab : Seo (500)
A server error occurred while loading the tabs: some tabs could not be loaded.

 

I read other posts which said this was a timing issue or something but no solution anywhere. Thank you very much for any help you can provide

 

Edit: nevermind, I reinstalled prestashop and it's working now

Edited August 25, 2015 by anazmi (see edit history)

[shacker]

ps version¿ you have more languages installed?