One thing you should fix is the google.load calls.  The API supports only 1 
call, which should look like this when loading the "gauge" and "corechart" 
packages:

google.load('visualization', '1', {packages: ['gauge', 'corechart'], 
callback: drawChart});

When you specify the "callback" parameter in the loader, you don't need to 
call google.setOnLoadCallback as well.  Try that and see if it fixes your 
problem.  If it doesn't, post the whole javascript code that you are using 
to draw the charts and I'll take a look to see if I can figure out what is 
causing the problem.

On Friday, February 28, 2014 2:12:46 PM UTC-5, Floriano Sabatini wrote:
>
> Sorry if my 'language' is not correct, in fact I'm not an expert at all of 
> programming but I was able to build an html file to display some parameters.
>
> I used both gauges and barcharts using the following instrucions.
>
> google.load('visualization', '1.1', {packages: ['gauge'], callback: 
> drawChart});
> google.load('visualization', '1', {packages:['corechart']});
> google.setOnLoadCallback(drawChart);
>
> everything worked very well for a number of days but suddenly this morning 
> I found that no charts was visible on my tablet.
>
> To solve the problem I changed the release of the visualization of the 
> core chart from 1 to 1.1.
>
> I know that release 1 is the 'official' one, while the release 1.1 is a 
> sort of experimental one.
>
> To be honest I have not more details.
> Saluti
> Floriano
>
>
>
>
> 2014-02-28 19:59 GMT+01:00 asgallant <[email protected] <javascript:>
> >:
>
>> Could you post details about the problem?
>>
>>
>> On Friday, February 28, 2014 1:48:12 PM UTC-5, Floriano Sabatini wrote:
>>>
>>> Today suddenly an application where I was using corecharts stopped to 
>>> work.
>>>
>>> I solved the problem juts changing the release of 'visualization'
>>> From: google.load('visualization', '1.0', {packages:['corechart']})
>>> To: google.load('visualization', '1.1', {packages:['corechart']})
>>>
>>> Not clear why this problem happen suddenly.
>>> Thanks
>>> Floriano
>>>
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