Salesforce internal server error-While sending email from salesforce

Hi,

We have a custom email functionality built in our instance. Here we save the content (invoice/indent) on button click first and send the same content through email again on button click (email button).

Now when we click the "email" to send the content through email from Salesforce, we get an error.

Error:

"An internal server error has occurred
An error has occurred while processing your request. The salesforce.com support team has been notified of the problem. If you believe you have additional information that may be of help in reproducing or correcting the error, please contact Salesforce Support. Please indicate the URL of the page you were requesting, any error id shown on this page as well as any other related information. We apologize for the inconvenience.

Thank you again for your patience and assistance. And thanks for using salesforce.com!

Error ID: 926367360-106915 (1923490463)"

Please get in touch @7204275528 for further info. on this issue.

Thanks & Regard
Shamsher Singh