Quote:
Originally Posted by Aliese
I'm not familiar with GIMP, but in Paint Shop Pro I have to run the optimizer while saving to get a transparency to stick. So, I "Save As", click "Options", and then click "Run Optimizer". If everything looks right, then I save in the optimizer.
There may be an easier way to do it, but I don't deal with transparencies all that often so it's not a big deal to me to take a couple of extra steps. 
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Hmmm I think your talking about the Animation Shop utility distributed with PSP, unless they integrated it in one of the last few versions.
It has the optimizer you speak of, never seen it actually in PSP, just trying to help in case someone gets confused looking.
In PSP 10 on down (dont know about the latest)
GIF is limited to 256 colors and PSP requires a color to be set as transparent, as there is no 'true' transparency in a GIF, it simply instructs viewers to not display the one color. There is should be no optimizer required for single frame images, as they are used to remove extra repeated data in a multiframed (animated) GIF.
PNG supports 16 million colors, including transparency, PSP will save any transparency in the image automatically upon saving a PNG file.
I would be willing to bet the OPs issue is the board resizing their image and thereby losing the transparency as Jack mentioned. Uploading it at 64x64 or smaller should resolve the problem.