Array Flip Error Message on All Node Pages Hello i dont know where to begin. All of a sudden MY WEBSITE is displaying this error when i view a node-


  Warning: array_flip() [function.array-flip]: Can only flip STRING and
  INTEGER values! in DrupalDefaultEntityController->load() (line 178 of
  /home/onlineba/public_html/onlineplac.es/includes/entity.inc).
  Warning: array_flip() [function.array-flip]: Can only flip STRING and
  INTEGER values! in DrupalDefaultEntityController->cacheGet() (line 355
  of /home/onlineba/public_html/onlineplac.es/includes/entity.inc).


I havent added anything or changed anything. I was hoping it was because OG groups upgraded to 7.2 but i seem to get it when viewing a node that is not in a group. Let me see my page content type as thats got no OG fields attached or postable in groups.... yes exactly the same thing. its only got a title, body and image field attached to it. Oh and a term referance. Lets remove that...yes still the same. 

Panels node page is disabled. Im sorry i cant tell you anymore about my problem but if anyone could be a lifesaver and offer any advice it would be gratefully reveived. I get really depressed when things like this happen. :(

thanks
Something is calling entity load with an incorrect $ids parameter.

This could be from something like node_load() or equivalent or node_load_multiple() or equivalent. If you pass in the wrong type of value into any of these you could end up with the error you mention.

If you want, add just above line 178 the line

print_r($ids);


Then reload the problem page and you will get a bunch of text print out.
Post the text back here (if you can upload files and there is a lot of output you could paste it in a txt file and post it).