The tool requires the MQeDiagnostics.properties file to be supplied as input. Edit MQeDiagnostics.bat so that it points to the correct location of this file and rerun the tool.
The file JavaEnv is not configured correctly. Edit the files MQeDiagnostics and JavaEnv if necessary and rerun the tool.
Edit the files JavaEnv and MQeDiagnostics if necessary so that the <mqe_install_dir>\MQe\Java\Jars\MQeDiagnostics.jar file can be found in the CLASSPATH environment variable.