(1) Can not run the software:
For Mac users, if the application will not run, try right-clicking the app and selecting Open from the pop-up menu. Or you can visit System Preferences → Security & Privacy and select Allow apps downloaded from: anywhere. (In recent versions of OS X, Apple has introduced the "Gatekeeper" system, which makes it more difficult to run applications like this software exported from Processing open source IDE. This application will be "self-signed" which means that Finder may report that the application is from an "unidentified developer" )
For Windows user, Most of the time it's OK. Maybe some firewalls or third-party anti-virus softwares may limit the its operation. Just allow the software to run.