Remote Wake Up / Remote Management Security Error Messages

This program has faced a network error.
Either the machine could not be woken up or it did not respond.
Unable to read Mac address from workstation object. Check if the workstation has been scanned and console user has remote management rights.
Unable to read Subnet mask from workstation object. Check if the workstation has been scanned and console user has remote management rights.
Unable to read IP address from workstation object. Check if the workstation has been scanned and console user has remote management rights.
The IP address for the machine is not valid.
The Subnet Mask for the machine is not valid.