Unable to add m-BitBlock LDdraw files to Leocad

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Hi LeoCAD team,

I am new to LeoCAD, and I guess I am stuck and need help.

I am unable to add any of the m-BitBlock LDdraw files(folder p and parts) found in the below repo to the LeoCAD library. I tried it as folders kept in an unofficial directory, and as a zip file in the same hierarchy with Library.bin folder.
https://github.com/e-Mole/m-Bitbeam_Parts_for_LDraw

I followed the unofficial method as guided in the official documentation page without any luck!
https://www.leocad.org/docs/library.html

And I was partially successful by pointing the folder using the View->Preferences->General tab - Custom paths - Parts Library
in doing so, there was render issue of the mBitBeam parts. And also the default library(Lego parts) was not avaliable.

Thanks in Advance

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Hi can anyone help :(