Index: trunk/src/libcschem/compile.c
===================================================================
--- trunk/src/libcschem/compile.c	(revision 10396)
+++ trunk/src/libcschem/compile.c	(revision 10397)
@@ -986,7 +986,7 @@
 		csch_sheet_t *sheet = *vtp0_get(&prj->hdr.designs, n, 0);
 
 		/* hierarchy: start from root sheets only, skip aux sheets; unlisted/unknown are rather compiled so no-project-file works */
-		if (sheet->stype == CSCH_SHTY_AUX) continue;
+		if ((sheet->stype == CSCH_SHTY_AUX) || (sheet->stype == CSCH_SHTY_EXTERNAL)) continue;
 		if ((sheet->stype == CSCH_SHTY_UNLISTED) || (sheet->stype == CSCH_SHTY_unknown)) {
 			if (prj->num_root_sheets != 0) {
 				rnd_message(RND_MSG_WARNING, "Compile: not compiling sheet %s: unlisted file in a project with explicit sheet list in project file\n", sheet->hidlib.loadname);