[TYPO3-english] Error: the XML response that was returned from the server is invalid.

[Marcello]

Hi,

I converted the database of my typo3 4.7 installation to utf8; after fixing several little problems now it looks like working fine.

Now I get the following error, when I have a link that sends some data to another page:

Error: the XML response that was returned from the server is invalid.
Received:


<?xml version="1.0" encoding="utf-8" ?><xjx><cmd n="as" t="programmkenntnisse" p="innerHTML"><![CDATA[<h2>Programmkenntnisse</h2><div class="article"><table class="programs"><tr><td valign="top"><dl><dt class="cllabel"><label for="InDesign1">InDesign</label></dt><dt>
				<select name="tx_ilbewerberform_pi1[programs][InDesign]" class="sel" id="col1_0">
					<option value="0" selected="selected"></option>
[....]

I get this error just in Chrome and Safari, Firefox works fine.
I don't really know how can I debug the problem, does someone have any idea?

Best