--- PC/bdist_wininst/install.c.orig	Tue Apr 10 00:07:35 2012
+++ PC/bdist_wininst/install.c	Sun Oct 26 17:26:03 2014
@@ -1742,6 +1742,16 @@
 
     sprintf(buffer, "%s\\%s-wininst.log", dir, meta_name);
     logfile = fopen(buffer, "a");
+    if (!logfile) {
+        char error[1024];
+
+        sprintf(error, "Can't create \"%s\" (%s).\n\n"
+            "Try to execute the installer as administrator.",
+            buffer, strerror(errno));
+        MessageBox(GetFocus(), error, NULL, MB_OK | MB_ICONSTOP);
+        return FALSE;
+	}
+
     time(&ltime);
     now = localtime(&ltime);
     strftime(buffer, sizeof(buffer),