Add image: Property value is not valid, Could not load file or assembly ...

Question

Hi guys!

I suddently got a little problem. I have manage to insert images before, but now I can't! :/
When I'm trying to add, I get this message:

Property value is not valid.

Could not load file or assembly 'PBgear scoreboard, Culture=neutral' or one if its dependencies. The system cannot find the file specified.

What is wrong? Have tried to add images in resources, but that wont work.

Cant find answer on this :(

Thank you