My Symfony2 projects currently use main trunks of the Doctrine projects, the latest release merge into this branch was 2.2.0-BETA2, that's why I mentioned it in"Affected versions". Sorry if mistaken.
I would like to report that MSSQL Driver/Platform still does not support the 'uniquidentifier' field type of MSSQL.
Trying to introspect the database with
php app/console doctrine:mapping:import MMPTestDBBundle annotation
we get the error
There is a related issue, opened and fixed in Doctrine1 project
Going to fix this issue in the same way. Any help greatly appreciated.