[Plugin: WP Event Ticketing] paypal error

Hi,
after pressing the “check out with paypal” button, i get the following error :

There was an error from PayPal
Error: The value of Description parameter has been truncated.

Didn’t find any helpful topics in the internet. Anybody got this error?

Thanks in advance,

http://ww.wp.xz.cn/extend/plugins/wpeventticketing/