The import bit of information is what model camera are the CR2 images from?
Every camera must be supported explicitly by an update of the PS Camera Raw plug-in and an update to LR that comes out after the camera is released, so if your camera model is newer than when CS4/ACR5.7 and/or LR4.6 were released then one or both won’t support it.
Here is a list of what cameras are supported by what minimum version of ACR and LR:
cr2 images from a Mark 111.
The things was that I was developing in lightroom 4.4 and could choose between either Photoshop CC or Photoshop CS4 both until I deleted cc after the trial. Now it won't work?
Now I can't open or see cr2 images nor open them in CS4