LibreCAD Version: 2.2.0-rc2-19-ge02f3580 library will not rebuild

Good day drafters...

I'm VERY new to the CAD seen but it's a necessary skill that I must develop for my employment.  Naturally, there's a learning curve to new skills so this question might be something that I'm just overlooking because i'm not familiar with it, but here it goes.

I have installed LibreCAD
- Version: 2.2.0hrc2-19-ge02f3850
- Compiler: BNU GCC 7.3.0
- Compiled on: May 16 2021
- Qt Version: 5.12.4
- Boost Version: 1.65.1

On this machine:
- OS: Windows 10, version 21H1
- CPU: Intel i7-7820HQ CPU @ 2.90GHz
- Ram: 16.00 GB

The paths for library and templates can be changed by:
> Options > Application Preferences > Paths > Paste path in field accordingly as prescribed by the LibreCAD docs, here.
---- https://librecad.readthedocs.io/en/latest/guides/blocks.html

When I do this, I then close and then reopen the program and those paths should show files in the paths acordingly, but it's not.  Instead, the defaulted paths are the files that show up in the Library Browser.

I'm trying to build a library of 2D hydraulic circuit paths to create drawings rapidly by recalling blocks.  This seems to be the fastest way to do what I'm trying to do, but I can't get LibreCAD to accept the paths I've selected.

What am I missing or has anyone else had this issue?

Much Appreciation
- Richard

What am I missing?

Furthermore, I get this message when LibreCAD is first launched.

Can you take a picture of Options/Application Preferences/Path window ?