Ok, I have to correct myself - I am receiving same error again. What I did:
I copied my terms from an other website. I pasted the text into notepad ++. Now I copied the code to the page - everything okay - at this moment I wrote here. But now all my links were unlinked, so I started to add the link manually. After that - same problem again. Now I even cannot paste the text any more - the error appears again.
Edit: I dont think it has to do with the code itself. I already try to copy an other code from my website. This code is clear html - no junk or whatever in it - same problem - I cannot safe. This is so wiered - building up about 100 websites now - but never had something like that...