Strange MAMEWAH .PNG Issue

[FrizzleFried]

Alright...so I went through and cleaned up the horizontal MAME rig,  deleting unnecessary items,  extras,  etc because I was running a bit low on space.

Everything appears to be working now EXCEPT I somehow lost .PNG file support for MAMEWAH?   .PNG image files load up fine separate from MAMEWAH just like a ..jpg, .gif, .tif file etc,   but in MAMEWAH no .png files appear at all.   I proved this by changing my usual OPTIONS.PNG file to a separate OPTIONS.JPG file and sure enough,  the image loaded (in this case the background image for the OPTIONS menu).  This wouldn't be such a problem,  I could easily change all the background elements to .JPG files,  but the problem is that all the TITLES, SCREENS, and MARQUEES that I use for the front end are also all .PNG files.

Now what in the heck could I have deleted from the MAMEWAH folder (or elsewhere?) to prevent only .PNG files from loading?

EDIT: From the LOG file...

08/01/2009 5:44:15 PM Bad image file: c:\mame\titles\invaders.png
08/01/2009 5:44:15 PM Bad image file: c:\mame\marquees\invaders.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\titles\spacbatt.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\marquees\uniwars.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\titles\spacbat2.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\titles\sbsgomo.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\marquees\bioship.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\titles\spacbeam.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\titles\spacefb.png
08/01/2009 5:44:16 PM Bad image file: c:\mame\marquees\spacefb.png

Now...I know they're not "bad image files"... what gives?

[FrizzleFried]

Issue resolved.  I simply re-installed MAMEWAH's system files and all is now good again.