I suggest testing it first by going into Source view in the FCK editor (click the Source button if its on the toolbar). Check if the offending  text has a span, p, div or no tag around it. By default, the FCK editor in DNN puts content in a P tag, but I could not see that the content in your site had that. Instead, it was in a span... I think that probably means that the editor is not putting any tag around it, or you have entered text in plain text mode perhaps?

In source view, put a P or div tag around the content and see what happens: <p>text</p>
(the forum might not display what I've put in just there)

If you are certain that a p or div fixes the issue, you c an then try and find out why it isn't inserting them automatically. It would have had to be changed from defaults for it to be broken. The place where FCK gets this from is in file Providers\HtmlEditorProviders\Fck\Custom\fckconfig.js after the custom toolbars section:

FCKConfig.EnterMode = 'p' ;  // p | div | br
FCKConfig.ShiftEnterMode = 'br' ; // p | div | br

Let me know what happens with the experiments in source view.

Rob

Good to hear you got it sorted. Yes, the plain text box inserts nothing but the text, bypassing all formatting.

Just a note.. the best way to paste from Word is to used the "Paste from Word" toolbar button in the rich text editor. The editor here in the forum has it just to the left of the Print button. It'll give you options to strip stuff out. I normally use the "Paste as plain text" button and then carry out any formatting manually - or leave it to the stylesheet to deal with.

Rob