Cwd object version 3.06 does not match $Cwd::VERSION 3.09

[RedFutura]

What does this error mean?

Cwd object version 3.06 does not match $Cwd::VERSION 3.09

I am getting a lot of Mail Delivery Failed errors and all of them show the error above.

This started happening after I "updated" from EDGE to RELEASE.

[dave9000]

use the search function

This error has been dicussed at length

[RedFutura]

I searched before asking..I'll look again.