System Setup -
IIS 7.0/.NET 4
Running YAF within another web application project
Here's the issue.
Someone has attached some png files to a post.
When you click on the image, you can open and preview it fine. But when you go to save it, it tries to save itself as resource.ashx (the name of the handler), rather than the png file. You can change it in the save as dialogue to "image.png" and it works, but most users don't know to do that.
Other attachment formats seem to work just fine (pdf, doc, etc).