I have R-261 running on a Linux 2.6 system, which has gcc-4.1.2 installed. It was working fine until the sysadmin installed an older version of gcc (3.4.6) which was required for an older app. The gcc-3.4.6 install is under /usr/local/bin. Now when a user invokes R, the error message "/opt/r-261/lib/R/bin/exec/R: /usr/local/lib/libgcc_s.so.1: version `GCC_4.0.0' not found (required by /opt/r-261/lib/R/bin/exec/R)" is generated. R is finding the old gcc version of libgcc which is in /usr/local/lib, instead of the newer one which is in lib. We've tried setting LD_LIBRARY_PATH to /lib, but that has no effect. Is there a way to force R to look in /lib for libgcc? -- Mike Waldron System Specialist RENCI at University of North Carolina ? Chapel Hill CB #3455, ITS Manning, Rm 2509 Office: 919-962-9778