I am getting the following error when deploying from one of the sandbox.
All Component Failures:
1. objects/Contact.object -- Error: Read is not a valid sharing model for Contact when Account sharing model is Private
2. objects/Case.object -- Error: ReadWriteTransfer is not a valid sharing model for Case when Account sharing model is Private
3. objects/Opportunity.object -- Error: Read is not a valid sharing model for Opportunity when Account sharing model is Private
*********** DEPLOYMENT FAILED ***********