Atollic TrueStudio "Invalid project path: Include path not found"

Warning in Atollic TrueStudio "Invalid project path: Include path not found"

Example below:

Invalid project path: Include path not found (C:\Program Files (x86)\Atollic\TrueSTUDIO for ARM Pro x.y.z\ARMTools\arm-atollic-eabi\include\c++\4.7.3)

Invalid project path: Include path not found (C:\Program Files (x86)\Atollic\TrueSTUDIO for ARM Pro x.y.z\ARMTools\arm-atollic-eabi\include\c++\4.7.3\arm-atollic-eabi\armv7-m)

Invalid project path: Include path not found (C:\Program Files (x86)

This warning commonly arises  if you have upgraded your  Atollic TrueStudio to a higher version  this warning arises either you created a project  by old version of true studio and trying to import it newer  version or you installed a new version of TrueStudio  and uninstalled older version the paths to run time library are thus removed.

Here is the solution:

1.  Right-click on your project and select Properties from the context menu.

2. Navigate to C/C++ Build, then Discovery Options in the left-hand tree.

3. Click the Clear button to remove any existing discovery state.

 -If you are using C++ projects, then you need to click Reset selecting both "Tools == C Compiler" and "Tools == C++ Compiler".