blog creation issues/error messages

I am trying to create a blog on my website.  Months ago I began it (by copying a page fron my other website) but never added anything new.  I am ready now, but when I click on the blog box I getthe following messeag:

???error.permissionDenied.title??? ???error.permissionDenied.prompt???

• ???error.permissionDenied.reason0???
• ???error.permissionDenied.reason1???
• ???error.permissionDenied.reason2???
• ???error.permissionDenied.reason3???

It is also not possible to just delete it and install another.  There is now no option/icon for installing blogs on my site.