Wacom tablet driver 6.3.30 requires .NET framework 4.5
.NET 4.5 is only required for the Wacom Desktop Center, which is included in the 6.3.30 driver package.
The Wacom Desktop Center software does not support the DTU-1141 or 1141B, so it is not necessary to install it for use with that device.
If the customer uses the "/opt nowdc" parameter during install they can exclude this software and .NET 4.5 will not try to install.
C:\Users\<user>\Desktop\WacomTablet_6.3.30-6.exe /opt nowdc