ZP9 Blog active object

  • I can not add comments to a blog and repeatedly get error message: There was an error: Error during processing.

    There are also situations where I do not get any error message, but the comment is not shown. The number of comments changes but only until I reload.

    Also the Feed icon link gives an error message: Server Error in '/modules2' Application.

    Any idea what could be the problem please.
    Thanks for your help (the site with the blog is www.greekwordlink.gr)