Resource Compiler Error RC2144
For the latest documentation on Visual Studio 2017, see Visual Studio 2017 Documentation.
PRIMARY LANGUAGE ID not a number
The PRIMARY LANGUAGE ID must be a hexadecimal language ID. See Language and Country/Region Strings in the Run-Time Library Reference for a list of valid Language IDs.
This error can also occur if resources have been added and deleted from the .RC file using a tool. To fix this issue, open the .RC file in a text editor and clean up any unused resources manually.