Having issues with folder permissions.

[romanturbo]

Ive installed prestashop  (better said migrated) but im having an issue.

Im constantly having errors like, imposible to read (random_file). I was fixing it 1 by 1 , but it was taking me like forever. So I decided to set everything to 775, just for testing. After that everything works perfectly. But... its not safe.

So I followed this guide

 

Correct settings for PS 1.5 x.:

 

The following folder should have write permissions (CHMOD 0750 or 0755): Some hosters do not support 0755 and allow only 0750

/cache
/cache/cachefs
/cache/smarty
/cache/smarty/cache
/cache/smarty/compile
/cache/tcpdf
/classes
/config
/config/xml/
/controllers
/css
/docs
/download
/img
/js
/localization
/log
/mails
/modules
/override
/pdf
/themes/default/cache
/themes/default/lang
/themes/mein Thema/cache
/themes/mein Thema/lang
/translations
/upload
/webservices

All other files  should have write permissions CHMOD 0640 or 0644  (exception for .htaccess, robots.txt and sitemap.xml - CHMOD 0664)

But it doesnt seems to work good for me. Because I start getting unloadable errors.

And by the way, is this guide talking only about folders , or its talking about setting 755 permisons to all the files and folders in those marked folders?