Submodels get deleted

[technicbasics]

Summary

As described in ticket #831 , I have also observed this behavior.
In my case, generated chains and ropes are affected.
LPub also describes a problem in the load status that I cannot verify.

When submodels are deleted, they are replaced in the code by two empty submodels with the same name.

The problem usually occurs when reloading the file (after a cache reset or when opening a single page from the dropdown menu), but not always. Unfortunately, I have not yet been able to discover a pattern as to when which submodel is deleted.
LPub3D Version

• Incarnation: LPub3D Windows Portable 64bit
• Affected build version: 2.4.9r4xx (last tested version is r435)
• Known working build version: i think 2.4.9r112

Runtime Environment

Operating system: Win 11 Home Version 24H2
Hardware architecture: x64
CPU model: 11th Gen Intel(R) Core(TM) i9-11900H
GPU model: NVIDIA 3060 RTX

Steps to Reproduce

File reload

I'll sent you the test file via mail, because it's a new project of us.

[trevorsandy]

Thank you for reporting this behaviour and providing the sample model file. I'll take a look.

The problem usually occurs when reloading the file (after a cache reset or when opening a single page from the dropdown menu), but not always

In the case of reloading the file, how are your able to determine submodels are no longer present - for example, 1. is the image empty, 2. is a parse error generated or 3. is the missing submodel noticed after you have saved the model file ?

As above, when opening a single page from the dropdown menu, how do you notice the submodels are no longer present ?

Cheers,

[technicbasics]

I will try to force the behaviour so that I can tell you exactly how it behaves. I noticed this because I opened the file in Notepad++ and LDCAD at the same time as LPUB3D, and changes are detected immediately there.
Regards Johann

[trevorsandy]

I have corrected some anomalies related to the updates for ticket #813 and #831:

1. Incorrect inline generated part description
2. Do not add submodel end 0 STEP to inline part submodels
3. Enable 'Discard' button on file load message dialogue

It is possible that items 1. and 2. above may have contributed to submodels not
being saved as these items rely on meta commands that define the start and end
of a subfile - submodel or inline part. Consequently, it would be better to use the
latest DevOps build to perform your checks.

Here is a load status screenshot for the model file you provided.

Here are some anomalies I discovered in the model file you provided:

1. The following three submodels start with 0 FILE but end
   with 0 STEP. The correct end should be a 0 NOFILE command.
   This inconsistency may contribute to the model file not
   being correctly registered and; therefore, not being saved.
   Effectively, this sequence of commands results in the
   submodel's subPart1 submodel being inserted, in a nested manner,
   into the parent submodel.

   • subModel-49.ldr Line 1830, 1832
     0 STEP

     0 FILE subModel-49_subPart1.ldr

   • subModel-50.ldr Line 2491, 2493
     0 STEP

     0 FILE subModel-50_subPart1.ldr

   • subModel-96.ldr Line 7564, 7566
     0 STEP

     0 FILE subModel-96_subPart1.ldr

2. Here the UNOFFICIAL PART command is placed before the
   0 !LDCAD GENERATED command at line 9473. This results
   in the subfile not being catagorized as LDCad generated
   when,in fact, it is. You can see this status in the screenshot.
   • subModel-146.ldr Line 9458, 9459
     0 UNOFFICIAL PART
0 BFC CERTIFY CCW
0 !LDCAD GENERATED [generator=LDCad 1.7 Beta 1]
3. The follow two unofficial part files, end with a 0 STEP command
   followed by a 0 NOFILE command. It is not advisable to use a
   0 STEP command in an unofficial part which should not contain steps.
   • subModel-146.ldr, Line 9502
   • subModel-145.ldr, Line 9557

Cheers,