All, After installing mactexlive 2009 sometime back, it seems "convert" doesn't work as it did. david-arnolds-macbook-pro-2:temp darnold$ convert addition.tiff addition.jpg convert: Compression algorithm does not support random access. `addition.tiff' @ tiff.c/TIFFErrors/323. Should I just reinstall? Has it been fixed in the latest upload of mactex? D.