Hello! First of all, the mod is great so far an and amazing addition to the mods that are usually on our list.

We have come across an Issue with the Core Sample Drill, it ALWAYS returns a sample with "INVALID MINERAL ID. NO MINERAL FOUND." - even when I make sure that we are at the exact spot of the vein (using the "/ie minerals" command)

The rest seems to work normally, we did find mineral veins with the normal tool and up until getting the core sample it seemed to work great, we have yet to try if the excavator would work, I will report back on that once we do in the coming days.

I will also report back when I get around trying to isolate what other mod causes this and if its just in Multiplayer or Singleplayer, too.

We use:
Mod Version: 4.2.4-134 (this also occurred on the first version we used: 4.2.2-132)
Minecraft: 1.16.5 (Forge 36.0.46) Multiplayer
Mods: Modlist on pastebin.com

Sorry for not fully providing all the help with this problem yet, but Minecraft is usually our relax time, not when we do debugging, I will try to add the following to this soon:

• If it happens in Singleplayer too
• If a minimal mod setup causes the same issue
• If possible, what mod exactly causes the issue
• If the excavator works nonetheless

Until then, thanks for your time and for the mod!

Do the server or client log provide any further insight when that sample is returned?

It seems to work without any issues in Singleplayer (Creative Mode).
Serverlogs and Clientlogs (debug and latest) also do not show any information during any part of the drill/sampling process.

We found another problem with immersive petroleum that might be related to that issue:

If I try to enter /ip reservoir get
The server outputs this in the console:
[22:28:55] [Server thread/FATAL] [ne.mi.fm.lo.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/resources/I18n for invalid dist DEDICATED_SERVER
And the client gets the message "An unexpected error occurred while trying to execute that command"

Just in case it was the immersive petroleum version we updated it to the latest (3.2.0-3) but still the same problem persists.

The commands work fine in single player though with all mods. So it's most likely an issue related to the server, we will try updating forge over the weekend and report back on our findings.