installing libsdformat2-dev --- didnot work for me
Below I am directly copying what appears on my command-line when I try to roslaunch empty_world.launch
akash@akash-Lenovo-Z580:~$ roslaunch gazeboros emptyworld.launch
... logging to /home/akash/.ros/log/419a1832-838e-11e4-95de-08edb9a09b47/roslaunch-akash-Lenovo-Z580-4074.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
started roslaunch server http://akash-Lenovo-Z580:45402/
SUMMARY
PARAMETERS
* /rosdistro: indigo
* /rosversion: 1.11.9
* /usesimtime: True
NODES
/
gazebo (gazeboros/gzserver)
gazebogui (gazebo_ros/gzclient)
ROSMASTERURI=http://localhost:11311
core service [/rosout] found
process[gazebo-1]: started with pid [4092]
process[gazebogui-2]: started with pid [4098]
Error [Converter.cc:127] Unable to convert from SDF version 1.5 to 1.4
Error [Converter.cc:127] Unable to convert from SDF version 1.5 to 1.4
Error [Converter.cc:127] Unable to convert from SDF version 1.5 to 1.4 Warning [parser.cc:396] Converting a deprecated SDF source[data-string].
Error [Converter.cc:127] Unable to convert from SDF version 1.5 to 1.4
Warning [parser.cc:396] Converting a deprecated SDF source[data-string].
Error [Converter.cc:127] Unable to convert from SDF version 1.5 to 1.4
[gazebogui-2] process has finished cleanly
log file: /home/akash/.ros/log/419a1832-838e-11e4-95de-08edb9a09b47/gazebo_gui-2*.log
Can you clarify what packages you have installed, or whether you're building from source? What is the output of
dpkg -l | grep gazebo?