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)
     {
E_STRING if the line read is an string like:
+variable="string between double quotes"
+Returns RAYDIUM_PARSER_TYPE_FLOAT if the line read is an float array like:
+variable={1.0,2.0,3.0,4.0}
+Returns RAYDIUM_PARSER_TYPE_RAWDATA if is not one of the previous types
+Returns RAYDIUM_PARSER_TYPE_EOF at the end of file.
+
 %%(c)
 FILE *fp;
 int ret;