I am not a coder in any sense, so I am unable to go into the coding and figure out what it wrong. Every time I try to edit the Date Navigation block feature to switch the search location from 'everywhere' to anything else (current level, beneath this page, etc.) I get this error and the block won't show:

{"aID":"26","arHandle":"Sidebar","cID":"129","error":false,"bID":"124"}

I do not know how to fix this, but I need to be able to choose the 'beneath this page' function in order to get the proper function I need. If someone could please help me or point me in the right direction to fix this, I would appreciate it.