Unlickable, Blank "Mass" Covering Half of Window

As the title would suggest, I have a large, solid-colored, blank wall covering SmartFTP. I can click and drag things into and around inside of it, but I cannot click something (or see) through it. It resulted on another machine, too, so it must be from some setting(s) changes I'm making. Any suggestions? Image below, in spoiler tag, and specs below that.

Spoiler: [+]

SmartFTP v4.0.1225.0
Windows 7 Home Premium x64 SP1
Alienware Aurora-R3
Intel Core i7-2600k 8-core @3.4GHz
AMD Radeon HD 6900 2GB VRAM
DirectX 11

Is any of this even relevant? Whatever... help please!