Lightroom :: How To Switch To Develop View

When working on images in Develop, Lightroom 5 is distorting them. For example, let's say I'm looking at an image in Library view (fig.1), then switch to Develop view (fig.2) — the image is suddenly compressed horizontally (or stretched vertically, however you choose to describe it).
 
At other times, images get distorted and rotated (fig.3). And at other times, images were appearing as though a sharpen filter had been applied with accented highlights — but this particular distortion doesn't seem to be happening anymore.
 
This does not happen to all images in the catalog. I'm running LR 5.2 on a 15" MBP with 16GB ram and a 1.2TB fusion drive.
 
I'm late on a deadline beause of this, and other local (NYC) experts, as well as Adobe phone support, are as stumpted as I am.
 
fig.1    
 
fig.2    
 
fig.3