error while loading shared libraries: libopencv_core3.so.3.3: cannot open shared object file

[rfzeg]

I am running ROS Kinetic and Gazebo 7.8.1 on Ubuntu 16.04. on VMWare Player 14.
First I installed ar_track_alvar:
$ sudo apt-get install ros-kinetic-ar-track-alvar
As running $ pkg-config --modversion opencv
showed the following message: "Package opencv was not found in the pkg-config search path.
I installed openCV with this command:
$ sudo apt-get install libopencv-dev
But when launching ar_track_alvar I get this error message: "/opt/ros/kinetic/lib/ar_track_alvar/individualMarkersNoKinect: error while loading shared libraries: libopencv_core3.so.3.3: cannot open shared object file: No such file or directory"

Inside my /opt/ros/kinetic/lib folder I see libopencv_core3.so, libopencv_core3.so.3.2, and libopencv_core3.so.3.2.0, but not libopencv_core3.so.3.3

Related issues that I found are:

• https://discourse.ros.org/t/opencv-3-3-1-is-breaking-builds-in-kinetic/3384
• image_view : error while loading shared libraries: libopencv_core3.so.3.2: cannot open shared object file: No such file or directory ros/ros-overlay#104

I also tried:
$ sudo apt install --reinstall ros-kinetic-opencv3
but the problem still persists.

Any help would be greatly appreciated.

[rfzeg]

Running:

$ sudo apt-get update
$ sudo apt-get dist-upgrade

Solved the issue.