Can FileViewPro open LBXLLS files? I think they are from Libronix.
No, FileViewPro won't open the files, because LBXLLS file format is proprietary. The file can be used only in Libronix 3, however, there are users who managed to open the file in LOGOS application by placing the LBXLLS in the Resources folder (just like in Libronix 3). There is an on-going discussion related to the subject on the official Logos forums. I recommend checking the available forums for more information: https://community.logos.com/forums/t/49967.aspx