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Karen Guaspari 8Karen Guaspari 8 

Deployment error - Can't specify an external sharing model for <custom object>

I created a new package last week and have only been able to install it in one org, all others fail with an error on each custom object in the package - 'Can't specify an external sharing model for <custom object>'.  This package has been deployed to 100+ organizations in the past and we have not had an issue like this before.  As a test I also tried to install an older version of the package into an org without the package installed and am getting the same error even though this version was sucessfully installed many times in the past.  Has anyone esle experienced this issue or have any information that might help?
Raj VakatiRaj Vakati

Check that the sharing model org-wide defaults are the same in your source and target orgs.