Sage300 LanPak License autofills in error when using A4WLicMgr.exe to set the user keys

Sage300 LanPak License autofills in error when using A4WLicMgr.exe to set the user keys. I access the license manager offline by using this tool found in the Sage\Runtime directory. However, when I go to add the license info, I am able to enter the type as LP, and the count as either 1 or 5, but then the Serial Number automatically is filled out and the program displays an error. I am not able to enter the proper serial number or activation code. I am using Windows 8.1 x64.