As the name suggests this error occurs when there is a problem with the installation in your Point Of Sale Installation process. The installation process is not a very complicated one, but it can get hampered due to some reasons, say if your date and time settings are not okay or your unique authorization code is not valid then the installation process might get disrupted. Once when the installation process gets disrupted as you try and start the software, it will show any of the following 4 types of errors as mentioned below:
Update your point of sale version to the latest QuickBooks version.
If you are still not sure about the process or the error message is still showing, immediately contact at QuickBooks Point of Sale support number +1-877-221-952O and get a detailed technical overview as well as a tutorial if you need to.