ROS beginner_tutorials (17th tutorial) Error

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Hello, I am trying to learn ROS. So far I had many errors. Thanks to ROS Answers, I found solutions to them so far.

I could not solve this one, so here is my question.

I get this error when I am trying the 17th tutorial - Writing a Simple Publisher and Subscriber (C++)-

irem@willis:~$ cd ~/fuerte_workspace/sandbox/beginner_tutorials
irem@willis:~/fuerte_workspace/sandbox/beginner_tutorials$ make
mkdir -p bin
cd build && cmake -Wdev -DCMAKE_TOOLCHAIN_FILE=`rospack find rosbuild`/rostoolchain.cmake  ..
[rosbuild] Building package beginner_tutorials
Failed to invoke /opt/ros/fuerte/bin/rospack deps-manifests beginner_tutorials
[rospack] Error: package/stack beginner_tutorials depends on non-existent package std_msgs


CMake Error at /opt/ros/fuerte/share/ros/core/rosbuild/public.cmake:129 (message):


  Failed to invoke rospack to get compile flags for package
  'beginner_tutorials'.  Look above for errors from rospack itself.
  Aborting.  Please fix the broken dependency!

Call Stack (most recent call first):
  /opt/ros/fuerte/share/ros/core/rosbuild/public.cmake:203 (rosbuild_invoke_rospack)
  CMakeLists.txt:12 (rosbuild_init)


-- Configuring incomplete, errors occurred!
make: *** [all] Error 1**