WORKAROUND
Backup the Collector database using SQL Server Management Studio.
Run the following tSQL commands on the Collector database (Change [ActiveRoles_CollectorDB] to match the actual Active Roles Collector database):
USE [ActiveRoles_CollectorDB]
GO
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [ObjectName] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [ObjectType] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [displayName] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [cn] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [l] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [c] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [givenName] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [homePhone] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [mail] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [objectGUID] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [objectSID] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [sn] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [co] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [title] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [company] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [department] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [initials] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [department] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [physicalDeliveryOfficeName] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [department] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [postalCode] [nvarchar](MAX) NULL
ALTER TABLE [dbo].[ObjectsUsersProperties]
ALTER COLUMN [telephoneNumber] [nvarchar](MAX) NULL
GO
STATUS
Waiting for fix in a future release of Active Roles.