1. No, this is not the only mod I'm using. However, the only other SCRIPTED mod that could be interacting with the mod is the Energy Shields mod, as no other scripted mods were in use. Planets were both modded (one was SeaWorld, the other a Terraformed Moon), but I kinda doubt either one of those caused the issue.
2. When I first dialed the SeaWorld gate and went through, it gave an error in the log and spat me out sideways (probably due to differing planetary locations), but otherwise had no ill effect. Immediately after getting to the SeaWorld gate, I dialed up the Terraformed Moon gate just to make sure that it worked both ways. Upon going through the gate it locked up as I came out sideways on the Terraformed Moon. Both gates were within enclosed structures, with the Terraformed Moon gate being inside a structure whose ceiling barely allowed room for the gate.
3. Singleplayer, in offline mode (i.e. no internet connection).

@Star-X, is this the only mod you have active? What steps caused the error? What have you done? Can you give me a list, what you have done before the error occured? Singleplayer or Multiplayer?

Error log that caused the lockup, for reference:
[19:07:44.896] updated Star-X to: 89623, 55610, -136552
[19:07:44.908] Exception: Object reference not set to an instance of an object.
at Sandbox.Engine.Physics.MyPhysicsBody.DeactivateBatchInternal(Object world)
at Sandbox.Engine.Physics.MyPhysicsBody.DeactivateBatch(Object world)
at VRageMath.Spatial.MyClusterTree.ReorderClusters(BoundingBoxD aabb, UInt64 objectId)
at VRageMath.Spatial.MyClusterTree.EnsureClusterSpace(BoundingBoxD aabb)
at Sandbox.Engine.Physics.MyPhysics.EnsurePhysicsSpace(BoundingBoxD aabb)
at Sandbox.ModAPI.Physics.MyPhysics.VRage.Game.ModAPI.IMyPhysics.EnsurePhysicsSpace(BoundingBoxD aabb)
at Phoenix.Portal.MessageMove.DoMove()
at Phoenix.Portal.MessageMove.ProcessClient()
at Phoenix.Portal.MessageBase.InvokeClientProcessing()

Space Engineers' new version (v1.885, the one that came out today) can randomly lock up when using this mod. Please fix soon.

As a side note .. "If" you have time ... and like to fix things .... :P .... the things that are still not work "100%" on server is the Iris code and syncing of the animations sometime ... but you have done already an amzing job on fixing the adress, so it is usable again , .. dont mind if you dont fix the other errors ... you have delivered as promosed ..you can not ask for more :D

@SpockTheBuilder, sorry, but i can´t edit any blocks in this mod. I don´t have the original files. I only bugfixed the script. I´m a c# programmer, nothing more...

Could you make a 5x5 portal as well? The small one is just slightly too small for my average small ships

It works now - GOOD WORK !
Thanks :D

@Fokeymann
Because its a mod which was already there my phoenix and the dailing was also not working like in the stargate-mod. I repaired it... its not my part to question if it is nessesary to make a stargate-lite-mod.

Now the dailing is working... don't know if the iris is working as intended but the dailing is ok. My "mission" was to repair the dailing. ;)

Sorry, didn't realize the Wormhole-Mod and Stargate-Mod are working together. Because i have the Stargate-Mod in my Mod-Folder the DHD from the Stargate-Mod was used. Now as i removed all other Mods from my SE i can see, nothing is working... dammit, i have to look at it again.

Dont work - looks the script system is buggy, as not even the Iris function from the portals work anymore ....

THANK YOU. I love the effect of the stargate mod, but I HATE the added ships/items/materials/etc in that mod. I was hoping someone would update this one.

@Fokeymann
Whats the issue with that? The Wormhole Portal is for people who want the functions of a stargate network but don't want the extremely out of place for Space Engineers portals.
If your 'issue' is that its a copy of a mod thats already on the workshop, it obviously states that the original mod doesn't work at all at the moment.

rly? a rip of of the stargate mod ...