If the license file is missing in the folder C:\ProgramData\SmartPTT, Dispatcher can't start and client.log file is clear (without errors and warrnings)
If the license file is missing in the folder C:\ProgramData\SmartPTT, Radioserver Configurator is running blank with critical error. Also it could have loading server settings error.
1. Get the customer license file and copy it
2. Rename copy file to LicenseKey.spttlx
3. Put the LicenseKey.spttlx file to C:\ProgramData\SmartPT