Hello, Andrea.
Regarding the installation problem, do you by chance running non-English version of XP too, like Markus? We will install non-English version of XP and test the product. We'll try to fix it as soon as possible as it may affect signinficant number of people.
Regarding the internet connection, it is required only when developers' version is being installed. But if you ship your ASP.NET application together with Cassini included as a prerequisite, it may or may not require internet connection depending on your prerequisites settings:
If you select "Download .. from the same location", all prerequisites will be put in the appropriate subfolders under the folder containing your application's setup.exe and MSI, and all components will be installed from there instead of internet.
Thank you for your feedback,
All the best,
UltiDev Team.
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