Hello Alexander,
Thanks for your query.
Please be informed that this warning can be ignored if it is not causing issue. Kindly confirm by executing the protected application if any problem is being faced.
This warning comes when the unprotected application contains certain data that needs to be taken care before encrypting. It may appear when the executable file being protected is a launcher file for other libraries.
Kindly uncheck the overlay support option in sentinel envelope and let us know if that helps removing the warning.
Regards,
Parth