[1.0.7.7] Add error message if member does not exist

[photonometric]

I've been updating some of my old artist downloads, and came across a member who appears to have deleted their account. However, searching for them in Process Member elicits no response in the program. The thumbnails and info from the previous search remain on the screen with no reaction to the new failed search. The only change is in the Member URL, which of course changes as you type in the search box. The lack of response is confusing, and the incorrect URL displayed with the previous search images is also problematic.

This isn't terribly hard to work around once you're aware of it, but it's probably the same behavior as in a network/proxy failure, which can complicate diagnostics for those of us with non-standard connections.

A simple popup signifying that the artist does not exist would be a solution. A more elegant inline approach might be to simply remove the thumbs and image numbers from the previous search and display artist not found somewhere in the member area. This would make moving into the next search easier without having to dismiss the program-locking popup.

Thanks! :3

[photonometric]

Ah, much less ambiguous. Very good work, thank you as always ^_^