Ok SRM Launcher seems to be fine.
Ive gone through a couple of mods by forking them and sorting out their errors and tested with your Arsenal Extensions mods again.
Not sure which one of them or what part broke it but i got them all working with all my updated weapon mods (that are not yours) at the time.
So nothing to do on your end but i may have to tell the other authors about their mods beeing outdated which i had to fix for me :)

I tried all of the following mod ids together (these were the ones I saw in the error messages) and I did not see any errors:

2052158037
2461963632
2556651648
2846957669
2854476884
3016092361

I'd suggest making a new galaxy with all of the mods disabled, then enable your modpack 2-3 mods at a time until you find the problem again. If you can narrow it down to a couple of mods I can figure out what the fix is.

Copy the link over in a browser tab if steam redirect shows you an error on dropbox

Ah yes there is indeed a repeating Error and some others related to this Mod.
You can check the full log at (was too long for pastebin):
https://www.dropbox.com/scl/fi/zbkitjv6bgean9i9linyb/serverlog-2025-05-22-23-50-47.txt?rlkey=eoz56rxuz6tjmxvwnd0xni9r0&st=pjhg7r0d&dl=0

Actually, can you post the server log? someone pointed out to me that the mod # would be in the error.

Sorry. I don't do compatibility checks anymore. If you can tell me what mod is causing the conflict I will fix it.

I can tell you for sure that it's not one of the other arsenal extension mods.

Im using a couple random Weapon Mods (High Tech Salvage/Mining Lasers, High Velocity Cannon, Cruise Missile, Flak Cannon, Star Trek Weapons Pack and Weapon Pack Extended - Remastered) alongside the following Arsenal Extension - [WEAPON] Mods: Slug Gun, Hydra, Vauss, Spreadfire, Helix, Fusion, Lancer, Pulse Accelerator, Plasma Flamer, Pulse Laser and Mass Driver.
They all work perfectly fine but as soon as i activate the SMR Launcher Mod the Shops bug out.
Any idea ? If it helps i could send you my full modlist via DM ?

Can't reproduce the issue on my test galaxy. It is likely that it is a compatibility issue with one of your other installed mods. I am sorry - I will not do any compatibility checks. You will need to go through the list and see which combination causes the error. If you can tell me which one it is I am willing to contact the other mod author.

Huh. Okay. I'll take a look at it.

v1.0.10 is Broken! It triggers the Bug where all Shops are sold out. Fix would be apreciated :)

Truly a man of culture in terms of both weapon systems and profile pictures.

Removed the old images. They're not accurate to 2.0 and maintaining them is just too much work.

This mod is now 2.0 compatible.

Terminator style plasma gun?

Fingers crossed for a terminator style plasma gun

Really liking these Arsenal Extension weapons, Keep up the good work!

very nice dude