If, after installing your licence file, the software fails to run with a message saying it cannot find a valid licence file it could be due to one of the following situations:
The file has not been found because the name is not what the software expects. By default, the software looks for a file called "licence.xml", but this can be changed in the initialization file.
Ensure the file is called "licence.xml". Note: it is not case sensitive
The file has not been found because it is not located in a place the software looks.
Other options are available which are descriped in the installation guide but the simplest option is as follows:
Place the licence.xml file in the Shaderware installation directory on each licensed computer. Assuming a default installation that will be the "Shaderware" directory within the "Program Files" directory. Most likely "C:\Program Files\shaderware" on a 32bit operating system or "C:\Program Files (x86)\shaderware" on a 64bit machine". However, it is possible that your program files directory has been moved by your systems administrator.