Failed to Load Value at Index Exception
By Manoj Madhusoodanan on Jun 19, 2012
When you are doing any VO extension following error is common.
The reason is you have created the custom VO based on a verion and migrated to a instance which is of higher version and the product team has changed the VO definition ( addition of extra attribute).in the later instance.
The solution is to recreate the VO based on the version you are going to upload.