diff -r 520cbe2f5d14 -r 08424e2e79e4 src/fileio.cpp
--- a/src/fileio.cpp	Thu Jun 05 16:55:00 2008 +0000
+++ b/src/fileio.cpp	Thu Jun 05 20:54:52 2008 +0000
@@ -186,7 +186,7 @@
 	FioFreeHandle();
 #endif /* LIMITED_FDS */
 	f = FioFOpenFile(filename);
-	if (f == NULL) error("Cannot open file '%s'", filename);
+	if (f == NULL) usererror("Cannot open file '%s'", filename);
 	uint32 pos = ftell(f);
 
 	FioCloseFile(slot); // if file was opened before, close it