Hello, it seems like the Grasshopper Player misbehaves in compiled plugins. I have made a plugin using GH definitions that are launched headlessly via C# script (the process is explained here ), which used to work up until RH8 SR15. I hadn’t tested this workflow in a while. I just did it with the l…

@ale2x72 Sorry for the delays man. Will update here soon. Got distracted putting out other fires.

@ale2x72 Looking at this thread today but kinda feel like I am being an archeologist trying to make sense of the many points and statements being raise on this thread around UI and Grasshopper execution model. I see @Japhy as asked for a simple example that replicates the problem but I don’t see any…

@eirannejad long story short: there has been a change in the GrasshopperPlayer behavior in compiled plugins between SR15 and the latest that broke several plugins (including mine), which I describe in my original post . @kiteboardshaper proposed a workaround that I marked as a solution, but it does n…

@ale2x72 This is incredibly helpful! A few follow up questions: A) GH Player I downloaded Test_RCP_SC+SE source.zip and loaded up the Test_RCP_Synapse_SE.gh file in Grasshopper. Seems like context print component only gets results when exit is clicked on the dialog. Here is what I see: Run Grass…

Hi @eirannejad , see my original post. The Test RCP plugin linked there contains the expected behaviour, and used to work up to SR15; then, it stopped working when I tested back (unchanged) in SR21 and later releases https://discourse.mcneel.com/uploads/short-url/udt9stilO9d7j5S6uH9u76Zt8W2.rhp . Fro…

I think it’s important to step back and recognize that this entire thread — along with several similar discussions on the forum — is really just a symptom of a deeper, unresolved issue. Most of us would probably agree that none of these problems would even exist if there were a supported, reliable …

@kiteboardshaper I read the post. Makes sense. From what I gathered this is an issue when GH definition is opening non-modal windows that need to recompute the definition when parameter changes and close and dispose the definition when window is closed. If I am correct, I think the GH UI component f…

@ale2x72 I am still confused. If someone can write down what the actual problem is and what the expected steps are it would help tremendously. Here is the GH definition I downloaded from the files here. The gh definition seems to be working both in GH and from published command. I don’t know what am…

@eirannejad if you can bare with me for a couple of days. As my handle suggests kiteboarding is business/life and I’m team captain for the South African team in the world’s biggest kiteboarding competition - going on right now. We are currently chasing wind and waves all around the southern tip of A…

Sure thing. Have fun there. I will do my best to get to the bottom of this and understand where the problem in the meantime

Grasshopper Player in compiled plugin issue

Grasshopper Developer

kiteboardshaper (Kiteboardshaper) November 19, 2025, 3:53am 51

Thank you @eirannejad

Having seen a preview of the development I must say I’m both excited and very grateful.

Looking forward to the public/production release.

Cheers

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Grasshopper Player in compiled plugin issue

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