Hi,
There was an issue with the way the program was translating from the culture name ("en-US", "fr-CA", "pt-BR", etc.) to the internal representation of the language used for the interface, which is close to the neutral name ("en", "fr", "pt").
Norvegian is a special case ("nb-NO" -> "no", not "nb" ) and the initialization failed.
The bottom line is that I found the issue and it should be corrected in next version.
I'm very grateful that you reported this because I think it was preventing virtually everyone with Norvegian locale to use the software !
This does not explain issues with the download however.
I'll look into the server's stats tomorow to see if I can detect something wrong.