Hi George.You don't have the final version of LWMViewer or the TDFMacros.inc included with it:http://library.avsim.net/esearch.php?CatID...04sd&DLID=41170FS24k.inc is not needed as these were incorporated into the new TDFMacros.inc, but was included so developers could see the macro usage.Dick

Thanks Dick,I did have the latest copy of LWMViewer, however I must have decompiled with an earlier version. LWMPoly3 still has 7 parameters but my de-compilation calls it with only 5.Yes, I decompiled on 12/12 and LWMViewer is dated 17/12.I will try again tomorrow. Damn it, I have another big edit to do to remove the default lakes.George

Well, it's now tomorrow. I've re-exported, re-edited and re-compiled. What can I say, LWMViewer is the best piece of software since ...Thanks Jim Kier, your efforts are much appreciated.George