Pentaho CE 5.3 : Unable to add data source !

Hello

I'm running Pentaho ce 5.3 on tomcat 6.0.
I tried to configure it with Postgresql 9.1. However when i want to add a new data source (in my case Postgre database) ,i'm having a problem.
The data source assistant appear and i enter the informations concerning my database .And when i press ok , it displays this message.

cf.jpg

Here's pentaho log :

pentaho.log
The catalina log:

catalina.2015-04-18.log

And The localhost log :

localhost.2015-04-18.log







Any help would be appreciated .
Thank you in advance

Attached Images

• cf.jpg (11.9 KB)

Attached Files

• catalina.2015-04-18.log (39.0 KB)
• localhost.2015-04-18.log (22.8 KB)
• pentaho.log (3.0 KB)