Mac Problem

Hi,I’m extreamly new to Macintosh. I installed Notes Client on one of Macintosh PCs, & when I try to open Notes Client it gave an error saying…

The Application Notes quit unexpectedly after it was reopened

Mac OS X & other apps are not effected

Click Try Again to temporaly restore the application’s default settings and open it again

Please Help me…!!!

Thanks

Buwaneka