Dear all, I created a program in which several ENVI routines are being used. It works fine as long as the source code has not been compiled. When I compile the program and call the .sav routine on another machine, it crashes when I select a file. Files are being selected using ENVI_SELECT. The failure message is the following: % Variable is undefined: E_INVISIBLE_FLAG (ENVI_GLOBALS1_COMMON). % Execution halted at: ENVI_ENTER_FILE % ENVI_OPEN_FILE % ENVI_SELECT_EVENT % WIDGET_EVENT % XMANAGER_EVLOOP_REAL_MODAL % XMANAGER % ENVI_SELECT % SLB_SPECTRALON_CORR (name of main program) % WIDGET_PROCESS_EVENTS % $MAIN$ Does someone know a way to solve this problem? Or is it in general not possible to use ENVI routines in compiled programs, even if ENVI runs on the machine. Thanks a lot for any feedback. Wouter