Cause: Error #282 is a timeout error that is caused by Excel 2007 not opening in the allotted time. You must change the timeout length to resolve this issue.
To change the timeout length:  

1.       From the Administrator module, go to Setup > Preferences > Preferences Editor.
2.       Double-click Preferences in the System section. 
3.       Scroll to the bottom of the list, and enter DDETimeout-Office12=10.  
4.       Click OK . The timeout length is changed.