Hello, I have installed acrobatviewer-1.1 and diablo-jre-1.5.0.07.01_1. Each time I want to use acrobatviewer, this message appears: $ AcrobatViewer expr: illegal option -- r usage: expr [-e] expression $ AcrobatViewer redbook.pdf expr: illegal option -- r usage: expr [-e] expression $ An idea what is happening here? With regards Stevan Tiefert