Hi,

I'm having trouble with removing web parts. In Edit/Design tab, when I drag a web part to recycle bin or select them then click Remove, it does pop up a confirmation dialog asking me whether to delete it, but after I click OK, nothing happens, the page doesn't reload (normally it should), and when I reload the page, the web part that I wanted to delete are still there.

I think some wrongly configured object or setting might cause this, but I don't know which. Can you suggest what can cause this problem?

Thanks in advance!