Index: Horde3D/Source/Horde3DEngine/utImage.cpp
===================================================================
--- Horde3D/Source/Horde3DEngine/utImage.cpp	(revision 132)
+++ Horde3D/Source/Horde3DEngine/utImage.cpp	(working copy)
@@ -138,14 +138,14 @@
 //
 
 // this is not threadsafe
-static char *failure_reason;
+static const char *failure_reason;
 
-char *stbi_failure_reason(void)
+const char *stbi_failure_reason(void)
 {
    return failure_reason;
 }
 
-static int e(char *str)
+static int e(const char *str)
 {
    failure_reason = str;
    return 0;
@@ -2603,7 +2603,6 @@
    offset = get32le(s);
    hsz = get32le(s);
    if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108) return epuc("unknown BMP", "BMP type not supported: unknown");
-   failure_reason = "bad BMP";
    if (hsz == 12) {
       s->img_x = get16le(s);
       s->img_y = get16le(s);
@@ -3318,7 +3317,7 @@
 #ifndef STBI_NO_HDR
 static int hdr_test(stbi *s)
 {
-   char *signature = "#?RADIANCE\n";
+   const char *signature = "#?RADIANCE\n";
    int i;
    for (i=0; signature[i]; ++i)
       if (get8(s) != signature[i])
Index: Horde3D/Source/Horde3DEngine/utImage.h
===================================================================
--- Horde3D/Source/Horde3DEngine/utImage.h	(revision 132)
+++ Horde3D/Source/Horde3DEngine/utImage.h	(working copy)
@@ -176,7 +176,7 @@
 
 // get a VERY brief reason for failure
 // NOT THREADSAFE
-extern char    *stbi_failure_reason  (void); 
+extern const char *stbi_failure_reason  (void); 
 
 // free the loaded image -- this is just free()
 extern void     stbi_image_free      (void *retval_from_stbi_load);