I've tried this and it is also unsuccessful.
Again, the thing that's odd is that the issue only happens some of the time and seemingly random. To give another example, I just had the following happen to me this morning. I opened CE and saw what you can see in Image 1. The black areas are facades that I have applied textures too and you can see the file path of the image. Everything seems fine except it just doesn't show up.
I shut down CE and immediately reopened, no other changes, and encountered Image 2. Everything works again. If the issue was simply a matter of rebooting CE, it would be a hassle but I could live with it, however I've recently encountered a few situations where I've rebooted CE multiple (i.e., 5) times and rebooted the computer itself a few times and the facades are still black.
As I noted in the thread above, I thought that if I changed the type of image from .png to .jpg it would fix it, but after a few days it started happening again. The whole situation has definitely progressed from a nuisance to a significant workflow hindrance.