Hi,

unfortunately I'm having the exact same issues. Tried to download Tweetian via Nokia Store, but I get the "installation package not found" error. When I try to install via .deb and Filebox, I simply get "Installation failed - retry?"... Tried other apps too with the same error messages. Those errors came suddenly out of nowhere, everything worked fine for months now. Any ideas/help on this, please? I'm pretty desperate :/ rebooting didn't work either.. Thanks in advance..