Problem with CrystalDecisions namespace

I am running VS2010 10.0.40219.1 SP1Rel on Vista Business SP2 fully patched. I installed Crystal Reports for VS2010 13.0.1. Yesterday Visual Studio crashed while I was working on a project containing two crystal reports. Today I have another problem. I cannot create a new project using a crystal report. If I create a simple windows form project, add a dataset and datatable, and then add a Crystal Report, I cannot build the project. I get a series of 25 warnings and errors, but I suspect that they all boil down to a namespace issue. The 'hidden code' for the crystal report shows that these Imports statments are failing.

Imports CrystalDecisions.CrystalReports.Engine

Imports CrystalDecisions.ReportSource

Imports CrystalDecisions.Shared

The error is "Namespace or type specified in the Imports 'CrystalDecisions.CrystalReports.Engine' doesn't contain any public member or cannot be found' I get the corresponding message for all three. What can I do about this?