Hello, I have just installed the IDL GRIB File Reader written by Andy Pursch on Fedora 8 Linux, IDL version 6.2 I have placed the IDL_GRIB.DLM and IDL_GRIB.So files in the /usr/local/rsi/idl_6.2se/bin/bin.linux.x86 directory and the 5 *.pro files in the /usr/local/rsi/idl_6.2se/lib directory, have adapted the rights to all users and have implement both paths into my IDL-file with !PATH='/usr/local/rsi/idl_6.2se/lib' !PATH='/usr/local/rsi/idl_6.2se/bin/bin.linux.x86' However, I have got the error message % Attempt to call undefined procedure/function: 'READ_GRIB'. % Execution halted at: $MAIN$ 50 /home/u0057519/IDL/lmk1.pro Does anybody know why this doesn't work? Many thanks!! Tim