Index: gui.c
===================================================================
--- gui.c	(revision 1174)
+++ gui.c	(revision 1175)
@@ -1590,6 +1590,9 @@
 
 void raydium_gui_show(void)
 {
+    if (!raydium_gui_theme_current.loaded)
+        raydium_log("WARNING: you must load a theme before showing gui.");
+
     raydium_gui_visible=1;
     if (!raydium_osd_cursor_texture)
     {