Using the page parameter by itself to iterate through List Resource responses has been deprecated. This feature is not available to any newly created accounts and will be sunset after 8/31/2015. The supported method to page through the results is to use the nextpageuri and the previouspageuri provided within the response itself.
Updated helper libraries already navigate through List Responses using the supported mechanism; we recommend using them. This how-to-doc contains sample code that can be used to iterate through logs properly.
Lastly, the following engineering blog post goes into depth, explaining why this feature was deprecated.