Microsoft (R) Program Maintenance Utility Version 7.00.8882 Copyright (C) Microsoft Corp 1988-2000. All rights reserved. cp lib/KeyedMutex.pm blib\lib\KeyedMutex.pm cp lib/KeyedMutex/Lock.pm blib\lib\KeyedMutex/Lock.pm NMAKE : fatal error U1073: don't know how to make 'keyedmutexd/keyedmutexd' Stop.