Upon installation I got a message saying that Ninjaboard does not install properly or does not install at all.
The Ninjaboard install package has a size that is slightly over 2MB. Usually the most common servers are allowing you to upload/install a file with the maximum filesize of 4MB. However, Some servers are set to a maximum filesize of 2MB which could give you such message saying that Ninjaboard can not be installed.
What you can do is to contact your host and ask them if they can increase the max_filesize on your server.
Otherwise try to install Ninjaboard by using the Install From URL method.
Enter the following command in the Install From URL field: