Cannot render the rubber band in LPub3D, any help ??

[El-Ashi]

Good thing: I loaded your file, created BIs with LPub3D and it worked fine.
Bad thing: dunno what happens on your machine! Could it be that the folder mentionned in the error box of your screenshot can't be written?

I have a good news, Philippe .. It works now. Johann gave me a suggestion.. Thanks a lot for your efforts, really appreciated.

Have a nice day