I started web2py from the source and I added the Graphviz to the PATH and 
now it works as a charm.

Thanks for the quick reply.

On Wednesday, January 22, 2014 4:29:47 PM UTC-5, Massimo Di Pierro wrote:
>
> Are you using the windows web2py binary? You need the source.
>
> On Wednesday, 22 January 2014 01:06:06 UTC-6, Bogdan Nechita wrote:
>>
>> Hi,
>>
>> When navigating to the Edit -> Graph Model on any web2py app, I get the 
>> error "pygraphviz library not found".
>> I have installed Graphviz (http://www.graphviz.org/Download_windows.php) 
>> and PyGraphviz (http://www.lfd.uci.edu/~gohlke/pythonlibs/#pygraphviz) 
>> successfully but web2py doesn't seem to pick up on that and still 
>> returns the error above. 
>>
>> I uninstalled PyGraphviz and tried to install it using the steps detailed 
>> here (
>> https://groups.google.com/forum/#!topic/networkx-discuss/Xy1lWfMdB6U) 
>> and here (
>> http://blog.ropardo.ro/2011/11/28/installing-pygraphviz-on-windows/) but 
>> none of the two attempts were successful - couldn't actually compile 
>> pygraphviz.
>>
>> System: Windows 8
>> web2py: 2.8.2
>>
>> Any help is greatly appreciated. 
>>
>> Thanks,
>> Bogdan
>>
>

-- 
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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