I tried to do electroglyph's lunar surface tut and ran into some problems.  I exported the file in Tif format and could not use the erode button on it because it put "rivers" in the landscape and there are no rivers on the moon.  So I used the raise/lower button and smooth button instead.  I thought it worked OK until I put Philip Drawbridge's KX-119 Bug in the scene to explore the lunar surface when I noticed there are artifacts on my crater walls.  Can somebody help me get rid of them?

Also Photopaint and ACDC will not recognize jpg's and bitmaps saved from PSP.  Why is that?

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