Opening signoSign/2 after an update installation results in error messages:
The updated version of signoSign/2 is incompatible with the plug-in versions installed on the machine. Each release of signoSign/2 also needs new versions of the plug-ins to be installed.
If you already licensed and need the plug-ins, please install the adequate version of the plug-ins as an update.
In any other case please uninstall the signoSign/2 plug-ins on your machine via the Windows control center -> programs and features.
... [Further plug-ins possible]
Please note that signoSign/2 plug-ins are not free of charge and need to be covered by your license.
Whether and which plug-ins are supported by your license can be seen within signoSign/2 under Help -> Licensing... under Options.