Invalid security token - Please help

[americanftasat]

When I try to update some of the admin pages, such as, weight ranges, states, etc.. I'm getting this "Invalid security token" error. Any ideas what security level and what pages need to be set (777, 755???)... I've tried several combination and didn't work.

Thank you for your help...

[americanftasat]

Can anyone help me with this? I have not been able to figure this out. I would appreciate your help.

[cerberus22]

make sure the following PrestaShop folders have ‘write’ permissions but do not apply these permissions recursively (to their subfolders): /config, /upload, /download, /tools/smarty/compile. Then make sure the following folders have ‘write’ permissions and apply these permissions recursively (to their subfolders): /img, /mails, /modules, /themes/prestashop/lang, /translations

taken from PrestaShop Wiki : http://www.prestashop.com/wiki/Getting_Started

Hope this helps, (I have found that sometimes you have to set permissions to 755 NOT 777, this seems to depend on your server setup , mine wont work if I set to 777)

[Tomas LT]

I have this problem, all file permisions is ok. Can anyone help me? Thanks.

[presta-dyr]

I just spent some time with this problem. I tried to install a tab in the back office named "NewsLetter" with the class "AdminNewsLetter". I got the "Invalid security token" message and it was driving me mad. After some debugging I discovered that it was because the class was really named "AdminNewsletter" ("letter" instead of "Letter").

Perhaps you have a similar problem.

/Kjeld