I Implemented a Sandbox Proxy in SharePoint 2010 and deployed. But when I access it in SharePoint site it gives error which I wanted to overcome it sandboxed solution.
"Unhandled exception was thrown by the sandboxed code wrapper's Execute method in the partial trust app domain: An unexpected error has occurred."
I followed following URL to Implementing a Sandbox Proxy in SharePoint 2010.
Advise me to overcome this issue.