This update to POS for .Net v.1.12 corrects an ArgumentNullException error. When a device is already claimed by one application, attempts to claim that device by other applications running from different user accounts, fail. POS for .NET returns an Argument exception instead of a POS exception. Once a user account receives this failure, subsequent attempts by that user account to claim the device fail, even after the device is released. This failure doesn’t occur for two applications running from the same user account. Access to the global event is denied only for different accounts.
Download: Software Update for POS for .Net v.1.12