Hi,
This is:
http://code.google.com/p/googleappengine/issues/detail?id=280
If you clear your datastore you should be ok.
-Marzia
On Thu, Jan 8, 2009 at 8:45 PM, WeatherPhilip <
philip-goo...@gladstonefamily.net> wrote:
>
> When I try and view one of my objects that I put into the SDK
> datastore, I get the following:
>
> Traceback (most recent call last):
> File "D:\Program Files\Google\google_appengine\google\appengine\ext
> \webapp\__init__.py", line 499, in __call__
> handler.get(*groups)
> File "D:\Program Files\Google\google_appengine\google\appengine\ext
> \admin\__init__.py", line 678, in get
> field = data_type.input_field(name, value, sample_values)
> File "D:\Program Files\Google\google_appengine\google\appengine\ext
> \admin\__init__.py", line 780, in input_field
> if len(sample_value) > 255 or sample_value.find('\n') >= 0:
> TypeError: object of type 'NoneType' has no len()
>
>
> I'm not enough of a guru to diagnose whether this is my fault
> (something wrong that I have done in creating my object), or whether
> it is a bug in the datastore viewer. This error happens when I click
> on an entry that is displayed after pressing 'List Entities'
>
> Philip
>
> >
>
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