Error 500

[FerreireX]

Hi,

 

I have updated my Prestashop to the last 1.6 version and after a few minutes the store stop working and show an error 500.

 

I have checked on error_log file and show the following error

 

PHP Fatal error:  Class 'ToolsCore' not found in /home/railtorail/public_html/override/classes/Tools.php on line 2

PHP Fatal error:  Class 'ToolsCore' not found in /home/storename/public_html/override/classes/Tools.php on line 2

 

I have used some recommendations from different posts I like in the next line and a few more, that make me replace a few folder and files from the original Prestashop but still have the same problem.

https://www.prestashop.com/en/blog/the-500-internal-server-error-explained-solved

https://www.prestashop.com/forums/topic/507232-fatal-error-class-tools-not-found-in-configconfigincphp-on-line-80/

 

If I select all Prestashop installation folders and files and give the permission to 755 for folder and file inside the folder do I have any trouble?