After upgrading from piwik 0.234 to 0.4 we get the pop-up error message on the dashboard:
There is no/bad markup from tag
about 20 or more times. We did a manual upgrade with as documented in the wiki.
Thanks for any help,
Thomas style_emoticons/<#EMO_DIR#>/laugh.gif style_emoticons/<#EMO_DIR#>/biggrin.gif style_emoticons/<#EMO_DIR#>/biggrin.gif style_emoticons/<#EMO_DIR#>/biggrin.gif
Got it, Firefox displayed missing widgets (maybe from the disabled GeoIP plugin). I removed the missing widgets. This one generated the error message in IE 8.