This error message means that the GibbsCAM file being opened contains an option that is not enabled by the current license. An example would be if part file could contain milling and turning is opened, but the license obtained from either the license server or local hardware key does not contain both of these options.

This can happen if when checking out licenses from a license server the relevant options are not checked out to match the options in the GibbsCAM file.

Sometimes the license checkout feature does not open on the launch of GibbsCAM, causing incorrect options to be loaded and then not match the option in the GibbsCAM file.

You can set Gibbs to always open the license check out window.

First select from the file menu preferences then select  license options and check always show.