... uses a wrong tag: --- gimpimage.c 1999/11/17 21:13:50 1.24 +++ gimpimage.c 1999/11/18 02:23:12 @@ -1201,7 +1201,7 @@ return_vals = gimp_run_procedure ("gimp_image_thumbnail", &nreturn_vals, - PARAM_DRAWABLE, image_ID, + PARAM_IMAGE, image_ID, PARAM_INT32, *width, PARAM_INT32, *height, PARAM_END); regards, -- narazaki