Why do I get a "Metafile not found" error when trying to compile a WPF application?

Question

I had to rebuild a project in my application.

I created a new project, created each file, and copied the contents of each file into the new project one at a time making all the necessary changes.

Now when I try to compile the project, it gives me three errors:

• The metafile c:\projects\project1\CustomerModule\bin\Debug\CustomerModule.dll could not be found.
• Application Definition Element could not be given by the library project file.
• The project file has invalid properties.

Clicking any of these does nothing.

What are these errors telling me? What do I need to change to get my application running again?

New info: If I do a "rebuild" on just the project, I only get the second two errors, so these seem to be the original issue, but what is the library project file and what properties are invalid?

Answer 1

I found the answer on this forum question.

Basically the thing I did wrong was copy images from a directory in one module to a directory in another module within the Solution Explorer. Don't do this. Instead, copy them from the Windows Explorer into the Solution Explorer, then everything works fine.