You have a problem on paypal button? When you use the script given from paypal for article, the button gets visible but when clicked on it defines no action..The solution is simple...

You have to change the Text Filters setting to "No Filters" for all users in global configuration and must make the text editors to none after that add the paypal code button script. It works fine...

Problem Solved.

with Cheers,
Ultimatecine.com