DI Better Packaging Core 3.10.3 crashes on loading save file or starting new game
For some reason this mod causes my game (and sometimes even my pc) to crash. Seems to have somethign todo with the blueprint reflection library, but in my backup log (also in the smmdebug.zip) i also get mentions of some kernel32 unknown function, so idk whats up with that.
The FactoryLog and Backup Log files are from a previous launch since when i tried to prepare this bug report by installing the DI mod for a more accurate debug log generation, it blackscreen to full on crashed my pc.
I disabled all my mods, played a new and (existing save copy) game in vanilla. then enabled only DI - got the same crash, regardless of if other mods are active or not. I purely play Singleplayer. I tested both my save copy which is on dunes, as well as all other vanilla maps - same result.
Keep in mind i do have a quite big mod list, but so far i have not found a SINGLE mod conflict, even the mod only enabled by itself causes that on my end.
I was wondering why this happened since the Mod had just updated barely 15h ago, so it should have been a stable one for the current game version, and i doubt @Darkplate would publish a broken mod.
Solution:Jump to solution
The reflection blueprint library is not part of my mod. I do not know what mod that belongs to. I am unable to solve this . That mod really only has recipes. I am unable to duplicate that issue
6 Replies
Automated responses for Rovetown (434708352077922306)
Key Details for SMMDebug-2025-08-16-17-49-21.zip
Crash found in FactoryGame-backup-2025.08.16-16.21.46.log
It has been attached to this message.
Solution
The reflection blueprint library is not part of my mod. I do not know what mod that belongs to. I am unable to solve this . That mod really only has recipes. I am unable to duplicate that issue
it looks like it crashed per a SML issue
[2025.08.16-16.21.45:643][511]LogWindows: Error: appError called: Assertion failed: Class [File:C:\SML\SML\Mods\SML\Source\SML\Public\Reflection\BlueprintReflectionLibrary.h] [Line: 143]
GetClassDefaultObject: received NULL class
here is the screenshot of the last recipy that shows in log and not having an issue

after every fix i change version before packaging my upload and then download the new version to make sure it works
I just had my friend test his as well and they did not get a crash either
also the log was wierd because it usually has a Unreal crash at the end but yours did not. It looks like a hard crash/
In the SMM log your have a issue with a SS_Mod
{"time":"2025-08-16T19:23:18.9950294+02:00","level":"ERROR","msg":"failed to insert mod version into local registry","mod":"SS_Mod","version":"1.1.31","err":"constraint failed: UNIQUE constraint failed: versions.mod_reference, versions.version (2067)"}
also I see this as well on a failed to find installations
{"time":"2025-08-16T19:47:06.4490936+02:00","level":"INFO","msg":"failed to find installations","error":"Legendary not installed"}
{"time":"2025-08-16T19:47:06.4490936+02:00","level":"INFO","msg":"failed to find installations","error":"Heroic not installed"}
hmm weird, guess this is just an issue on my end then, ill try and clean install everything maybe somethign is just corrupt or missing somehow.
thanks for the help, i like your mods, keep up the good work