Plug-In Download - NexDef

I am trying to download the NexDef plugin for my Mac (Currently running Lion - OS X 10.7.3) but it will not work

Here is the message that i receive when trying to install it.

Can someone please help?

Last login: Wed Feb 29 12:32:07 on ttys000

/Volumes/nexdefinstall/NexDef\ Plug-in.pkg/Install.command ; exit;

joey-hp:~ Jer$ /Volumes/nexdefinstall/NexDef\ Plug-in.pkg/Install.command ; exit;

##

##

## Ininstalling the NexDef Plug-in

##

##

pax: Could not set permissions on . <Operation not permitted>

pax: Access/modification time set failed on: . <Operation not permitted>

pax: Could not set permissions on . <Operation not permitted>

pax: Access/modification time set failed on: . <Operation not permitted>

Could not extract

logout

[Process completed]