Index: trunk/src_plugins/export_dxf/dxf.c
===================================================================
--- trunk/src_plugins/export_dxf/dxf.c	(revision 29425)
+++ trunk/src_plugins/export_dxf/dxf.c	(revision 29426)
@@ -333,6 +333,8 @@
 		pcb_message(PCB_MSG_ERROR, "Can't render dxf template header\n");
 	fclose(dxf_ctx.f);
 
+	if (!dxf_cam.active) dxf_cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&dxf_cam) == 0) {
 		if (!dxf_cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "dxf cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
Index: trunk/src_plugins/export_excellon/excellon.c
===================================================================
--- trunk/src_plugins/export_excellon/excellon.c	(revision 29425)
+++ trunk/src_plugins/export_excellon/excellon.c	(revision 29426)
@@ -283,6 +283,8 @@
 		pcb_drill_export_excellon(PCB, &udrills, conf_excellon.plugins.export_excellon.unplated_g85_slot, options[HA_excellonfile_coordfmt].lng, fn);
 	}
 
+	if (!excellon_cam.active) excellon_cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&excellon_cam) == 0) {
 		if (!excellon_cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "excellon cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
Index: trunk/src_plugins/export_gcode/gcode.c
===================================================================
--- trunk/src_plugins/export_gcode/gcode.c	(revision 29425)
+++ trunk/src_plugins/export_gcode/gcode.c	(revision 29426)
@@ -365,6 +365,8 @@
 		}
 	}
 
+	if (!gctx.cam.active) gctx.cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&gctx.cam) == 0) {
 		if (!gctx.cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "gcode cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
Index: trunk/src_plugins/export_gerber/gerber.c
===================================================================
--- trunk/src_plugins/export_gerber/gerber.c	(revision 29425)
+++ trunk/src_plugins/export_gerber/gerber.c	(revision 29426)
@@ -681,6 +681,8 @@
 		pcb_drill_export_excellon(PCB, &udrills, conf_gerber.plugins.export_gerber.unplated_g85_slot, 0, filename);
 	}
 
+	if (!gerber_cam.active) gerber_cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&gerber_cam) == 0) {
 		if (!gerber_cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "gerber cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
Index: trunk/src_plugins/export_png/png.c
===================================================================
--- trunk/src_plugins/export_png/png.c	(revision 29425)
+++ trunk/src_plugins/export_png/png.c	(revision 29426)
@@ -777,6 +777,8 @@
 	free(white);
 	free(black);
 
+	if (!png_cam.active) png_cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&png_cam) == 0) {
 		if (!png_cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "png cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
Index: trunk/src_plugins/export_ps/eps.c
===================================================================
--- trunk/src_plugins/export_ps/eps.c	(revision 29425)
+++ trunk/src_plugins/export_ps/eps.c	(revision 29426)
@@ -343,6 +343,8 @@
 
 	fclose(f);
 
+	if (!eps_cam.active) eps_cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&eps_cam) == 0) {
 		if (!eps_cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "eps cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
Index: trunk/src_plugins/export_ps/ps.c
===================================================================
--- trunk/src_plugins/export_ps/ps.c	(revision 29425)
+++ trunk/src_plugins/export_ps/ps.c	(revision 29426)
@@ -657,6 +657,8 @@
 		fclose(fh);
 	}
 
+	if (!ps_cam.active) ps_cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&ps_cam) == 0) {
 		if (!ps_cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "ps cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
Index: trunk/src_plugins/export_svg/svg.c
===================================================================
--- trunk/src_plugins/export_svg/svg.c	(revision 29425)
+++ trunk/src_plugins/export_svg/svg.c	(revision 29426)
@@ -363,6 +363,8 @@
 	}
 	f = NULL;
 
+	if (!svg_cam.active) svg_cam.okempty_content = 1; /* never warn in direct export */
+
 	if (pcb_cam_end(&svg_cam) == 0) {
 		if (!svg_cam.okempty_group)
 			pcb_message(PCB_MSG_ERROR, "svg cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);