The Twarp , Twarp colonizing macro built into ATTAC and the REXX script do not work.. They go to 1 and get the colonists, but it never heads back to where your planet is.. I am not sure what you need to debug this, but let me know and i will provide it..
Earth is currently working on a solution to this issue it has been previously posted. There are several other issues he is trying to resolve. I have a colo.ts script u can use for the time being if u use twx, or play with the previous 4.1.7 which is 100% stable.
mix and match for the brave...
If you are brave, you can try mixing and matching DLLs and erx files.
If you want, overwrite the regina.dll in 4.1.9 with the DLL from the 4.1.7 version. That will back you down to version 3.0.1 and see if the colonizer is faster.
You can also back down the StandardColonizer.erx and library.erx files as well and see if there is any change. Post results to the forum.