Hi ma.hirsch; unfortunately I'm playing on Mac and Editor is not available for Mac. Any other solution ? Your puzzles are just great with excellent level design. Would be a pity, if your nice workshop couldn't be played thanks

Not yet.
Because I have a lot of other things to do at the moment
and I'm currently working on OP4, I don't have the time yet
found for it.

I played the mod and got all of the sigils and stars from World 1 except for the castle, I was able to go to the Main Station and get the code for World 2, but when I try to teleport there I get "Unable to Load" message and it just hangs up. Any suggestions would be greatly appreciated, because I think your game is awesome and I want to play more puzzles. I have Windows 10 64 PC with GTX 960 video card. I installed Talos - Serious Editor but I don't know what to do with it. I have this same problem with other mods (like Schroedinger's Cat) where I can launch the mod and play it but when I go to teleport it freezes and won't load next level. Please help.

Simply start the editor and then close it again.
Then it should work.

Still no luck. I've tried starting and stopping the editor before I launch the game, and I've started and closed the editor during game play. I still get the "Unable to Load" message. Perhaps I have posted this comment in the wrong thread because I'm not getting a "BatchedParticles.mtr" error. I am able to use the codes to teleport to World ! and the Main Station and back again, but not to World 2. I am using the 2017 Serious Editor that was updated October 2023.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3080476625

Do you have Prototype, RTG and Additsonal Lasercolor installed?

Thank you for being responsive. I do have the Additional Laser Color mod by Solais installed. I don't know about the Prototype and RTG. I am not very savvy about game development. I also have the Road to Gehanna DLC.

Then all you need is Prototype.
Look on the shop page.
All DLCs are listed there.

Success! Thank you for your patient instruction. I had no idea I had to purchase a Prototype DLC from Steam to make this work. Now I can look forward to continue playing your excellent mods. This is like Christmas come early.

So I think I got all the sigils and stars in OP2 except for the last star in World 2. I looked inside and outside the puzzle areas, but couldn't find the star. But a strange thing happened in Puzzle 03. I used the recorder and got on the platform. Then I found myself floating above the ground and slowly drifting out of the puzzle area. From this vantage point I glimpsed what might be another puzzle area far away across the swamp land. I could turn around but could not otherwise move or jump, I was frozen. I've been able to repeat this frozen floating, but so far have not left the puzzle area again. Any tip on that last star would be appreciated. Thanks for OP2, it is my favorite mod so far. The jet pack on World 4 was rewarding.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3100467008

floating far away from puzzle area