Symptom: You receive the following errors in Event Viewer after installing the February Cumulative Update 1 for Lync Server 2013.

The database being used by Group Pickup is not the appropriate version.

Event ID: 31059
The database is not the correct version:
Connection: Data Source=sqlserver.mydomain.local;Initial Catalog=cpsdyn;Integrated Security=True
Expected... SchemaVersion: 1, SprocVersion: 1, UpgradeVersion: 2
Actual... SchemaVersion: 0, SprocVersion: 0, UpgradeVersion: 0
Cause: The database has not been upgraded.
Resolution:
Upgrade the database to CU1.

Event ID: 31055
There was a problem communicating with the Group Pickup backend database.

There were problems accessing SQL server:
Connection: Data Source=sqlserver.mydomain.local;Initial Catalog=cpsdyn;Integrated Security=True
Message: The EXECUTE permission was denied on the object 'DbpGetVersionSchema', database 'cpsdyn', schema 'dbo'.
Error code: -2146232060
Error number: 229
Cause: This may be caused by connectivity issues with the backend database.
Resolution:
Check if SQL backend is running and accepts connections from Group Pickup.

Solution:
When installing Cumulative Update 1 for Lync Server 2013 from the following KB article http://support.microsoft.com/kb/2809243, make sure you follow the last step to update the backend database.  To finish the steps, execute the following command via the Lync Server 2013 PowerShell prompt.

Lync Server 2013 Standard Edition

Install-CsDatabase -ConfiguredDatabases -SqlServerFqdn frontendserver.fqdn -Verbose

See the following KB article if you have mirroring configured on your backend database servers.