When creating a package on some views the P&D validation had lots of errors.
A type with the same name and namespace already exists in the model.
You are unable to create a Package and Deployment package.
In this scenario the issues all relate to Picker controls. To troubleshoot you will need an export of the Validation error messages.
Go through all the validation errors and find similarities. In this case the similarities were on Picker controls.
Try removing the related controls from the view and use P&D to see if that clears up the Validation Errors. If so, then recreate the controls and configure them.