An error occurred while processing the form when the SharePoint 2010 workflow was started.

Problem:

When the worker oint 2010 list workflow is started, a "severe error occurred while processing the form" is displayed ".

Error message-1:Object doesn't support property or method 'addeventlistener' Error message-2:There has been a critical error while processing the form.

 

Troubleshooting 1.Check in different machine to isolate the issue 2.Check in different browsers to make sure that browsers are not the culprit 3.Check the User Permissions 4.Check for any customization's 5.Check the firewall restrictions
ResolutionSharePoint 2010 does not recommends/support ie111) Open the ie2) tools3) Compatibility View settings4) enter the URL of your SharePoint site (without default. aspx/home. aspx) in the "add this Website" section5) Click on add6) close7) Close the Internet assumer8) Open your SharePoint site in a new ie9) Check the results and confirm!

-See More: http://sharepointknowledgebase.blogspot.com/2014/02/there-has-been-critical-error-while.html#.VB-U9vmSxtk

 

An error occurred while processing the form when the SharePoint 2010 workflow was started.