This sounds a lot like a coding issue. Could you post the .mat in quotes up there? ^^ It'd really help.
Same thing happens to me when the coding is derped.
Also, if it did work on one account but not the other, I'm not sure what could be causing that... Are you sure your looking at preset_1, preset_2, and so on and not (USERNAME)_1, and so on?
What is .mat? And I believe so.
The .mat is that extra file you have in all of your preset folders. Yours may not look like this:
(http://i42BannedImageSite/oli6t.png)
But like a piece of paper. Just right click on it, open it with notepad, copy everything from in there and paste it on here.