I developed a sample application in visual studio 2010. I created an Empty SharePoint Project and gave the local site url for debugging. Checked "Deploy as Farm" as the trust level of the SharePoint solution. Added a visual webpart and also a class to the solution. I am able to build and successfully run the application using visual studio. In my local machine am using SharePoint foundation 2010 to debug the SharePoint application. Now i want to deploy this application in the SharePoint server 2010 which is in a virtual machine. 1. I copied the .wsp file of the application i created to the virtual machine. 2. From the central administrator in the VM I created a web application and the site collection. 3. Then using Site Actions -> Site Settings -> Solution(Galleries), choose the .wsp file for uploading. it showed a "Warning: You should only activate this solution if you trust this solution. An activated solution can read, modify and delete your data. " and the activate button is disabled.
Then I tried to do same in my local machine on a different site collection. Here Activate button is enabled but when clicked it threw exception
Server Error in '/' Application.
This solution contains invalid markup or elements that cannot be deployed as part of a sandboxed solution. Solution manifest for solution 'aee60282-765d-4c9f-b67a-5981f18a6d3b' failed validation, file manifest.xml, line 10, character 4: The element 'Solution' in namespace 'http://schemas.microsoft.com/sharepoint/' has invalid child element 'TemplateFiles' in namespace 'http://schemas.microsoft.com/sharepoint/'. List of possible elements expected: 'FeatureManifests, ActivationDependencies' in namespace 'http://schemas.microsoft.com/sharepoint/'.
What could be this error?