Hi everyone, I created a .sav file and I am trying to launch it on a different IDL virtual Machine. I am obtaining the following error. % Unexpected validation error. % RESTORE: Unexpected item code found in save file. % Execution halted at: $MAIN$ I am not sure about its meaning. Could it derive from an obsolete routine? I created the .sav with IDL 7.0 and I am using it with IDL 7.1. Thanks Mitch