Feed Validation Errors

I have put my RSS feed through a validator and found the following errors. Does anybody know what they mean and how I can correct them?

line 40, column 0: Invalid HTML: EOF in middle of construct, at line 1, column 131 (2 occurrences) [help]

<content:encoded><![CDATA[<p>Neuro Linguistic Programming (NLP) has a num …

The line it refers to contains a lot of text. I can cut and paste it if necessary.

I’ve tried to cut and paste all the information as an image but there doesn’t seem to be a facility to do that!

Regards

Paul