VS Custom Project template not supported png images

Hi,

I have creating a visual studio custom package with .selfvsproject extension, created the vs custom project successfully by using the below tutorial.

https://msdn.microsoft.com/en-us/library/cc138589.aspx

and created a templates as described in tutorial.But not able to open the image resources once created a new project, getting the below issue.

http://i.stack.imgur.com/1Za8M.png

Could you please help me out to solve this issue?.