Hello, I looked around but couldn't find solutions for my problem. I downloaded v.1.9 and the patched version for windows. I use Windows XP professional with AMD Athlon XP. When I use help.search() function, I get the following error message: Error in .readRDS(contentsFile) : can't read workspace version 167772160 written by R 512.1.7; need R 256.1.4 or newer What does this mean? More importantly, how can I fix it? Thanks, Tomo ********************************* Tomoharu Eguchi Protected Resources Division Southwest Fisheries Science Center 8604 La Jolla Shores Dr. La Jolla, CA 92037 858.546.5615 Voice 858.546.5657 FAX