Do you have a URL I can take a look at? Which browsers are experiencing the problem?
ie 8 is the only one that seems to do it.
My client has reported it to me.
I have checked the web site in IE8 and did not get the error that you have pointed out. Could you please provide me with the replicating steps ?
Sorry to resurrect a thread from nearly a year ago, but I'm suddenly getting the exact same error being thrown up by IE8 on one of my sites, after its first upload using Muse 5.0. Never seen it before in other Muse versions. Other browsers don't throw up the error, and the pages still work fine in IE8 if you just dismiss the message. Happens every time you change page though!
The best solution we found after hours of trying new things was to delete a text post that had multiple hyperlinks in them. Something about that text box was causing issues and as soon as we got rid of it, we were ready to rock and roll.
Hope that helps.