deployment failed?

Exception: Deployment failed. Output:
[18:31:11.728] Windows Phone 8 Runner started.
[18:31:11.728] Opening XAP file.
[18:31:11.744] Getting app id.
[18:31:11.744] Getting app icon.
[18:31:11.868] Looking for device.
[18:31:11.900] Connecting to device {30F105C9-681E-420b-A277-7C086EAD8A4E}.
[18:31:14.567] Installing app {c2863e0f-e6c6-4168-8640-0c3f14665890}.
[18:31:15.004] Disconnecting from device.
[18:31:15.004] Deleting app icon.
[18:31:15.004] Microsoft.SmartDevice.Connectivity.SmartDeviceException: 0x81030119

at Microsoft.SmartDevice.Connectivity.Device.InstallApplication(Guid productId, Guid instanceId, String applicationGenre, String iconPath, String xapPackage)
at Microsoft.SmartDevice.Connectivity.Wrapper.DeviceObject.InstallApplication(Guid productId, Guid instanceId, String applicationGenre, String iconPath, String xapPackage)
at Unity.Program.Run(Guid appId, String iconPath, String xapPath, Boolean test)
at Unity.Program.Run(String xapPath, Boolean test)
at Unity.Program.Main(String[] args)
[18:31:15.004] Exiting Windows Phone 8 Runner.


Thanks for the help...

 

apparently the problem lies with having too many developer apps on my phone... how odd.