I have had a very helpful reply from Christopher J. Madsen via RT bug-Win32-IPC@rt.cpan.org who suggested that in my case I can remove the problem by using

use Win32::ChangeNotify qw(FILE_NOTIFY_CHANGE_SIZE);
[download]

As this will just export _NOTIFY_CHANGE_SIZE from the module. Therefore there will not be any conflict with INFINITE. This worked so I no longer have a problem!
Thanks for your help in pointing me in the right direction