Problem with tabletop manipulation (table detection) [closed]

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hey,

after launching pr2 in gazebo i add the available table in gazebo_worlds using roslaunch gazebo_worlds table.launch

soo i tried placing the table in a lot of places but the problem is that in all the examples of table top manipulation (both python and cpp exmaples) it never detects the table and gives error 2 = NO_TABLE ..

if any1 had a similar problem let me know i think there is some specification regarding the table that i just cant find O_O (possibly over looked).

Thanks :D