build error: "Error result 31 returned from mt.exe"

_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on April 09, 2012 12:19:32_

happened in: http://dynamorio.org/CDash/buildSummary.php?buildid=9285#Stage2 Project: DynamoRIO
Site: Windows.7_x64.BuildBot
Build Name: debug-unit-tests-32
Build Time: 2012-04-09T01:34:25 MDT
Type: Nightly
Errors:1
Warnings:22

This is a weird error from mt.exe:

62>Embedding manifest...
62>Project : error PRJ0002 : Error result 31 returned from 'C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin\mt.exe'.
62>Build log was saved at "file://e:\b\build\slave\win_7_x64_dr_nightly_checkout\build\build_debug-unit-tests-32\suite\tests\security-win32.hooker_FLAKY.dir\Debug\BuildLog.htm"
62>security-win32.hooker_FLAKY - 1 error(s), 0 warning(s)

My plan is to ignore it and see whether it happens again ;)

But I'm recording it here so we recognize it later

May want to upgrade to v7.0 SDK

_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=724_