prestashop 1.6.0.6 PaypalModule Internal server error

[serzararri]

Hello,

Ive a trouble with prestashop paypal module using prestashop 1.6.0.6 version. I try to explain what happens:

 

When i click on the button:

 

I see a blank page with this error:

 

 

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at [email protected] to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

 

I see the ftp files and folder perms and there are ok, i try to change the file: 

 

 

defines.inc.php. Then, set _PS_MODE_DEV_ to TRUE 

 

but it seems not make the debug. 

 

Could someone help me to solve this problem?

Why i cant see the debug errors??

 

Thanks,

 

 

[serzararri]

Sorry, is urgen for me to solve this problem...somebody could help me??

Thanks,