Done! We were able to fix the compatibility problems for the Cameo Systems Modeler 2021x. You can find the new version v5.0 here: https://sourceforge.net/projects/fas4md/files/FAS4MD-v5.0-b01-final-20210909.zip/download
Added boarding system storyboard images
VariantConfiguration::selectedVariants multiplicity is undefined
REQUIRES on wrong toolbar group
Validation rule ValidVariantConfigurationMaxVariants has not error message
More than one I/O partition
Branch for development of the plugin extension ...