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2015-06-26 03:16:16 -0500 commented answer Problem with Indigo and Gazebo 2.2

Oh my God... I spent half an hour downloading dozens of these models by wget >_<... thank u so muchhhh...

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2014-12-14 10:02:11 -0500 answered a question Problem with Indigo and Gazebo 2.2

For error

Error [Param.cc:181] Unable to set value [1,0471975511965976] for key[horizontal_fov]
Error [Param.cc:181] Unable to set value [0,100000001] for key[near]

Workaround: $ export LC_NUMERIC=C or you might want to add that line to your ~/.bashrc.

But the problem with "namespace not found", I had the same. Two days ago I installed ros indigo -> gazebo -> gazebo_ros plugin and kobuki_gazebo, everything ok. Now I reinstall them, with the bit different: first gazebo -> then ros indigo... and I encounter errors like you

Sorry for my bad English :P

UPDATE

Finally I got it! Gazebo try to collect models from http://gazebosim.org/models but there 's something wrong... the folder ~/.gazebo/models does not exist and Gazebo simulator can not start. Here's a bit more simple solution: run $ wget -r -R "index\.html*" http://old.gazebosim.org/models/

to get all models from gazebosim and copy them into ~/.gazebo/models folder (after you mkdir models inside ~/.gazebo) and everything will be ok.

UPDATE 2

See @Juni answer for better way to download models.