InstallerNG is not fully compatible with the official Installer - it seems to report errors on perfectly valid code, such as the "(confirm)" option, depending on the values passed or not passed.
I should point out that I have never, ever, ever used InstallerNG, and the above is based on people trying to use my scripts with it, rather than with Installer. Does ING support the new functions of Installer v44? Are there actually any advantages at all of using ING rather than the official one? Why replace a working program with a clone of it?
Chris