Unfortunately, Adobe no longer supports flash-based applications as of January 12, 2021. As a result, products such as the digital textbooks on DVD-ROM / USB stick no longer work reliably.
We have already successively replaced digital textbooks with new digital teaching packages (Digitale Unterrichtspakete) in order to optimally support your lessons with digital media.
If you have a question about a specific textbook, please contact customer service using the contact form in the help portal.