warning: array_shift() on editview.views.inc on line 76.

I get this error using a view:

warning: array_shift() [function.array-shift]: The argument should be an array in (path to site)\sites\all\modules\editview\includes\editview.views.inc on line 76.

The view is made with 3 fields: title, cck price1, cck price2
The node type is an Ubercart product.
The error comes out in a precise moment:
I open the view, I modify a row, save, I receive the message node updated, I edit another row, save, ERROR
This does not happen if I modify and save always the same row, but only if I save another raw.

Hope I made myself understandable :)

Every module in my installation is updated

Thanks for the support in advance!

Patrizio