Index: draw_ps.c
===================================================================
--- draw_ps.c	(revision 36265)
+++ draw_ps.c	(revision 36266)
@@ -11,6 +11,7 @@
 #include <string.h>
 #include <assert.h>
 #include <time.h>
+#include <errno.h>
 
 #include <librnd/core/math_helper.h>
 #include <librnd/core/error.h>
@@ -267,6 +268,8 @@
 
 int rnd_ps_new_file(rnd_ps_t *pctx, FILE *new_f, const char *fn)
 {
+	int ern = errno;
+
 	if (pctx->outf != NULL) {
 		rnd_ps_end_file(pctx);
 		fclose(pctx->outf);
@@ -273,8 +276,7 @@
 	}
 	pctx->outf = new_f;
 	if (pctx->outf == NULL) {
-		TODO("use rnd_message() and strerror instead");
-		perror(fn);
+		rnd_message(RND_MSG_ERROR, "rnd_ps_new_file(): failed to open %s: %s\n", fn, strerror(ern));
 		return -1;
 	}
 	return 0;
Index: draw_ps.h
===================================================================
--- draw_ps.h	(revision 36265)
+++ draw_ps.h	(revision 36266)
@@ -62,7 +62,8 @@
 /* Call this in set_layer_group() to see if a new page needs to be stated */
 int rnd_ps_is_new_page(rnd_ps_t *pctx, int group);
 
-/* Announce a new file, check for file open error */
+/* Announce a new file, check for file open error. Call right after fopen()
+   because it depends on errno. */
 int rnd_ps_new_file(rnd_ps_t *pctx, FILE *new_f, const char *fn);
 
 /* Render frame and background of a new page, depending on pctx settings:
Index: ps.c
===================================================================
--- ps.c	(revision 36265)
+++ ps.c	(revision 36266)
@@ -567,7 +567,7 @@
 
 			gds_init(&tmp);
 			fn = ps_cam.active ? ps_cam.fn : pcb_layer_to_file_name(&tmp, layer, flags, purpose, purpi, PCB_FNS_fixed);
-			nr = rnd_ps_new_file(&global.ps, psopen(ps_cam.active ? fn : global.filename, fn), global.filename);
+			nr = rnd_ps_new_file(&global.ps, psopen(ps_cam.active ? fn : global.filename, fn), fn);
 			gds_uninit(&tmp);
 			if (nr != 0)
 				return 0;