I just uploaded ZSprite 2.2 w/ GS which has all the bugs fixed (finally :). now it asks you how you want your sprites outputted (either grayscale or a one layer sprite) to save time graymask is the first sprite you lay down for grayscale as well as the only sprite in a regular sprite project (i know most ppl will rename it anyway so its not that big a deal). go check it out and tell me what you think :)