A pull copy operation on a target computer failed.
The most common cause is that the target computer cannot see or access the file being pulled. This can be due to a name resolution or authentication problem preventing the network path from being accessible to the target.
This can be due to the deployment using with the option to "Run as Local System" which causes it to run under the computer system account which won't, by default, have access to network resources.
The error message will contain additional information about the cause of the error. Make sure that the path in question can be seen from the target and that the deployment doesn't use the "Run as Local System" option.