crash report from server side just tested, with fabric api 0.50, immersive portals 1.3.6 and c2me 0.2.0 alpha 7 for 1.18.2

c2me still dead

Context: crash on world either load or gen , unsure on which

The latest version does not crash with c2me, however lighting a nether portal will stuck in "loading chunks".

hmmmm will try now

just tested in singleplayer on my pack (to see if it would break more with extra mods) and the nether loaded perfectly fine, im gonna try on a new world

failure to load into world propperly, Loading terrain ui is stuck on screen yet im in game, i can hear sheep around me.
uppon second load it would appear that everything loads fine, i even load into the nether just fine.

Portals from immport iirc ar eentites so the kill@e killed the portal itself

I'm able to go into and out of the Nether on the current build. The End is still a bit glitchy; the server crashed when I went in the first time, then on the second try (once I made it in), it hung getting me back to the overworld after /kill @e. On the third try, I was able to play the credits and return to the Overworld with no issues... however, when I returned to the Nether portal, it was non-functional and became a window from the Overworld back into the Overworld (though this may have been caused by the earlier crash).

Okay, I retract that; if I go to and from the Nether enough, chunks stop loading. I've disabled C2ME for now.

The latest version does not crash with c2me, however lighting a nether portal will stuck in "loading chunks".

I can confirm this issue. Any portals created using the portal blocks also get stuck.

1.19.2, Immersive Portals 2.2.5.

AMD Ryzen 9 6900HS, 16GB of RAM, 8GB allocated to the JVM, AMD Radeon RX 6700S.

In addition, and unrelated, the dimension stack causes serious performance issues, with and without Iris and shaders

I can confirm this issue. Any portals created using the portal blocks also get >stuck.

1.19.2, Immersive Portals 2.2.5.

AMD Ryzen 9 6900HS, 16GB of RAM, 8GB allocated to the JVM, AMD Radeon RX >6700S.

In addition, and unrelated, the dimension stack causes serious performance >issues, with and without Iris and shaders

I cant confirm this. I was able to create a nether portal and light it. No problems with going in or out.

But i am able to confirm that chunks stop loading like @rdrpenguin04 said. The complete world is hanging.

During my testing, it seemed to happen when the portal was loaded while another portal was visible through it or near it, yet in most circumstances it works fine. The issue isn’t random, but the specific cause needs more testing (1.19.2. Fabric API 72 and 73 tested with same issue)

Tested with C2ME 0.2.0+alpha.10.126 and Immersive Portals 4.0.1, worked fine. Other than fps drops if I kept going in and out of the portal. I had 2 very close portals in the netherworld linked with 3 portals in the overworld and walking through them all with both in render distance. I also had the entity culling mod.

AMD Ryzen 5 7530U, AMD Radeon RX Vega 7, 8GB RAM. probably 4GB allocated to JVM

Problem no longer occur.

Hardware:
DDR3 RAM 2x 10GB
Intel(R) Core(TM) i3-3220 @ 3.30GHz
TEAM T253LE120G - 112 GB
No graphic card

Minecraft: Minecraft* 1.20.1
Fabric API v0.90.0+1.20.1
IPortal 3.3.3+1.20.1
Sodium renderer & Indium
C2ME 0.2.0+1.20.1 ALPHA

I do not agree with some of the comments above because it is fully working with TWO incompatible mods (one other i don't actually remember) and it is NOT hanging at ALL

Might be of some help for some, if you're getting:

Failed to process task qouteall.imm_ptl.core.portal.nether_portal.NetherPortalGeneration$$Lambda$11693/0x000000080170dff0@76048a8e
java.lang.NullPointerException: Cannot invoke "com.ishland.c2me.threading.worldgen.common.IChunkStatus.getReducedTaskRadius()" because "chunkStatus" is null

Try setting "reduceLockRadius" to false within the config for C2ME. It solved an issue for me where the generation of a portal would be unable to generate all of it's chunks. I haven't noticed any other issues so far.