"In fact, that's exactly what I was doing when this happened." If you're saying that you were tweaking in your bitmap editor while Poser still had the texture "loaded," perhaps there lies the cause of the problem. I do the same thing on occasion and haven't experienced the problem but I can certainly see how there might be a potential conflict. In fact, it would seem more logical that PhotoShop or whatever, in the process of saving your tweaks to a file that Poser has an open handle to, may be doing the corruption as opposed to Poser which should have no reason to be doing a file save or write operation. In summary, ladies and gentlemen of the jury, I submit that there is reasonable doubt as to whether the defendant, Ms. Poser, comitted this crime. If the bitmap doesn't fit, you cannot convict.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken