Ok, now i send a donation by paypal... but i see no space where to enter my nick on boonex... because my paypal adress is not the same of my boonex adress email.. after i pay with paypal... the server redirect me at:

http://www.boonex.com/payment_completed.php?tx=37R28593JD093652N&st=Completed/xxxxxxxxxxxxxxxxx etc...

but i got this error on the page

Fatal error: Class 'SendMessage' not found in /home/boonex/public_html/payment_completed.php on line 89