diff -r 0a5e583393e1 -r 8e4bf84a7bb8 librazor/error.c
--- a/librazor/error.c	Tue Sep 09 15:27:12 2014 +0100
+++ b/librazor/error.c	Thu Jul 07 11:04:10 2016 +0100
@@ -20,6 +20,9 @@
 
 #ifdef MSWIN_API
 #include <windows.h>
+#ifndef ERROR_TRANSACTIONAL_OPEN_NOT_ALLOWED
+#define ERROR_TRANSACTIONAL_OPEN_NOT_ALLOWED	6832L
+#endif
 #endif
 #include <stdlib.h>
 #include <string.h>
@@ -129,12 +132,28 @@
 	if (object)
 		error->object = razor_utf16_to_utf8(object, -1);
 
-	FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER|
-		       FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
-		       NULL, err, MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
-		       (LPWSTR)&buf, 0, NULL);
-	error->str = razor_utf16_to_utf8(buf, -1);
-	LocalFree(buf);
+	switch(err) {
+	case ERROR_TRANSACTIONAL_OPEN_NOT_ALLOWED:
+		/*
+		 * Attempting to include files in a transaction on a filesystem
+		 * that doesn't support them (only NTFS?) produces this error
+		 * for which the default text isn't very informative. Try and
+		 * give more useful information.
+		 */
+		error->str = strdup("Not allowed (perhaps the filesystem "
+				    "doesn't support transactions)");
+		break;
+	default:
+		FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER|
+			       FORMAT_MESSAGE_FROM_SYSTEM|
+			       FORMAT_MESSAGE_IGNORE_INSERTS,
+			       NULL, err,
+			       MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
+			       (LPWSTR)&buf, 0, NULL);
+		error->str = razor_utf16_to_utf8(buf, -1);
+		LocalFree(buf);
+		break;
+	}
 
 	return error;
 }