I can't login localy. Error on login window (Local installation, MAMP)

[unu]

Hello,

I just have installed PrestaShop 1.5.2

During installation I've get all "green smileys" and front shop seams to work correctly.

 

But when login I obtain white screen. So I have switched error display to 'on' and I can read this:

 

Warning: require(/Applications/MAMP/htdocs/admin/functions.php) [function.require]: failed to open stream: No such file or directory in /Applications/MAMP/htdocs/admin/index.php on line 32

 

Fatal error: require() [function.require]: Failed opening required '/Applications/MAMP/htdocs/admin/functions.php' (include_path='.:/Applications/MAMP/bin/php5.3/lib/php') in /Applications/MAMP/htdocs/admin/index.php on line 32

 

index.php line 32 is:

require(dirname(__FILE__).'/functions.php');

 

function.php file existe and I did not touched that one

 

I do not know how to fix that issue.

If anybody can help with this one, please indicate "slowly" what to do as I am a beginner.

 

Many thanks in advance!

 

Unu