Thanks to everyone who wrote me suggesting possible approaches to getting PAUP 4.0 b10 to run in classic mode on a G4 Powerbook. The fix that worked for me was to place the PAUP fontfile into the PAUP folder on my old G3 desktop Mac, then migrate that folder first to our network drive, then into the "Classic Applications" folder on my G4 Powerbook hard drive, thereby overwriting the previous installation of PAUP 4.0. Once I did that, PAUP started normally and is running fine. Alan PLEASE NOTE THE NEW EMAIL ADDRESS!! Alan W. Meerow, Ph.D., Research Geneticist and Systematist USDA-ARS-SHRS, National Germplasm Repository 13601 Old Cutler Road, Miami, FL 33158 USA voice: (305) 254-3635 fax: (305) 969-6410 email: alan.meerow@ars.usda.gov Alan.Meerow@ARS.USDA.GOV