IK fast for 5 dof robot issue, openrave not showing the model

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Hello ROS Community.

I have a 5DOF custom made robotic arm. I have been doing some cartesian path-based motion planning tasks with moveit commander, but (as it was expected) the default KDL fails to find solution quite often. Therefore, i tried to create the IKfast solver to my robot following the step-by-step instructions on the tutorial page.

I was able to successfully install the OpenSceneGraph, the FCL as well as the OpenRAVE based on the recommended link.

The first issue i encounter is, that the openrave "$MYROBOT_NAME".dae doesnt show the robot model. (the collada file was successfully created, and the openrave-robot.py "$MYROBOT_NAME".dae --info links shows the correct links, parents though).

I tested the official UR5 description (e.g., i created the collada from the official ur5_robot.urdf.xacro), but the outcome was the same, the openrave doesnt show the robot, just some unrecognizable shapes, as on the previous screenshot.

What could be the problem here?

Nonetheless, i could generate the solution CPP File, but now with the IKFastKinematicsPlugin NO successful motion planning can be performed (10/10 times it fails to find solution for the tested reachable poses).

can i suspect, that the root of this problem is related to the wrongly displayed model in openrave?

I also tried to make a wrapper.xml as it was recommended here, but i did not change the outcome.

Thank you for the help in advance.

Best regards, Ákos