Multidisplay failing to 'create render texture'

I'm trying to build a project on 4 screens (2x projectors and 2x monitors all running at 1024x768). I'm using 2xGTX 295s.

Every time run the file (using -multidisplay) the main screen hangs black and if I look at the processes I see 3 other screens being created, but nothing ever appears. The log files say "D3D11:failed to create RenderTexture(1024 x 768 fmt 44 aa 8), error 0x8007000e" where each Display.Activate() code should execute.

I've tried searching for a solution, but because multi-display is relatively new I can't seem to find anything on it.

Does anyone have a solution or idea? it would be greatly appreciated. Thanks.