Project Templates Stopped Working

[DonnieHolmes]

I have a silverlight solution that is based on the ESRI Standard Template. Yesterday, it started to fail when compiling and gave me the error - "XAML Namespace http://schemas.microsoft.com/expression/blend/2008 is not resolved". Which doesn't appear to have to do with anything that i've modified in the template.

Upon further inspection, creating a project from scratch using the ESRI Templates no longer behaves as expected. In Expression blend it simply won't compile & in VS2010 nothing renders in the design view (although the app will launch from vs2010). I have tried uninstall/reinstall of the ESRI Silverlight/WPF SDK as well as all the dependencies (VS2010 w/ silverlight 4 tools, Blend4) only to experience the same results.

At this point, I'm kind of stuck without access to any sort of designer. Any ideas?

[MikeTischler]

I've been having similar issues.  In Expressions Blend 4 RC, I can no longer build the project without errors.  The <UserControl> tag ...the very first line in the XAML...has an "Error HRESULT E_FAIL has been returned from a call to a COM component" error.  If I mouse over the curly line, I get some more info like

at MS.Internal.XcpImports.CheckHResult(UInt32 hr)

which, sadly, doesn't mean that much to me.

[dotMorten_esri]

See the known issues:
http://blogs.esri.com/Dev/blogs/silverlightwpf/archive/2010/04/30/The-ArcGIS-API-for-Microsoft-Silve...

[MikeTischler]

Forgive me, but I'm not sure at which known issue I'm supposed to look.  The most relevant on the page that you linked to references .NET Framework.  I have .NET Framework 3.5, and am still running into this issue.

[dotMorten_esri]

There's only one known issue listed 🙂

[MikeTischler]

Duh...

I kept reading the blog posts, instead of looking at the big friggen tag that said "KNOWN ISSUES".

Sorry!