OK, so I figured out why the mesh download crashes.
If you reinstall HB, and change the default install location - the installer doesn`t change the meshfolder location. It still is the original path suggested by HB - which ofc doesn`t exist.
So I did what CodenamG suggested in another old thread:
"go into your honorbuddy folder, and make a new folder called "Meshes" then click "settings and tools" and change the mesh folder location to the new folder you just created"
So - problem fixed. Just close the thread..