Okay, I'm beginning to suspect that the problem has to do with publishing to Xythos, which uses WebDAV, then viewing with a browser. Once you do that, whether you close the browser window or not, NOF publishing/preview are toast as far as graphics are concerned. However, I still need to do some more testing when my brain isn't so foggy. I have FTP web space that I can use for testing and I also have another Xythos account that I can try. It will take me awhile to try all possible permutations of web host space, browser, browser window open/closed, but I think I will be able to figure something out within the next day couple of days.