after installing VS2012 Update 1, VS generates incorrect code in the InitializeComponent method for xaml page. It creates page Uri using page namespace instead of assembly name. That causes runtime XamlParseException at attempt to load such page.
It worked before Update 1 installation and it breaks our already published samples.
We can try to workaround this issue by renaming namespaces in all samples. But customers, who already downloaded our samples, will still have this issue after installing Update 1 for VS 2012.
We consider that as a showstopper issue.
Please, fix it ASAP.