Hi Fred,
Thanks for your update.
You no need to have the source files before registering the Syncfusion license key in your build server machine.
Could you please follow the below steps to configure your build server machine?
1. You no need to install the Syncfusion Essential Studio setup in your build machine.
2. You could just copy the binaries from existing PC which Essential Studio installed.
3. Download the utility from the below link.
http://files.syncfusion.com/support/Build/RegisterProductkeyinBuildMachine.zip4. Extract the zip file; it contains two files named enterkey.bat and synckeynoui.exe.
5. Open the Command Prompt with administrator privileges.
6. Navigate to the parent folder of the batch file.
7. Run the command enterkey followed by your product key.
Note : Product key should be enclosed in the double quotes.
Example: C:\Work\Root>enterkey "PRODUCT KEY"
Please let us know if you have any concerns.
Regards,
AnandharamanS