Lpub3D issue

[Heather S]

Please bear with me- I am very much new to this whole thing- my 10 year old son loves to create his own Lego models and it has been his dream to create instructions to share with his friends. I’m trying to assist him, I discovered LDCAD and learned the basics in how to use it, then got him started. We got his first model completed, spent quite a bit of time refining the steps and getting it all figured out, then imported it into LPub3D to create the instructions. The first time we opened it, it was fine, then we started editing things and got the cover page looking nice. When we went further, we discovered something that needed to be fixed, so went back to LDCAD to edit that. We had both programs running, which I think was a mistake because then they kept asking if we wanted to update what the other program had changed, and I think we made the wrong choice at some point. In the process of figuring that out, we lost a bunch of edits, but then realized we needed to just run one program, do the edits and save before going to the other program to continue. Once we finished our edits in LDCAD, we went back to try and work on the instructions in LPub3D and it gives us this error- “step with INSERT COVER_PAGE meta command cannot contain type 1-5 line. Invalid type at line 31 (file:main.ldr, line:30) “. I’m at a loss on how to resolve this- I assume there’s is some piece of code that needs to be edited, but I don’t know how to get to it or what to change it to. That’s all kind of beyond my scope of understanding at this point- I am willing to learn if I can, but haven’t been able to find the right info on how to fix that. Can someone help me understand what/how to fix this? Thanks.