Hello Dynamo team and various users,
I am inquiring about computer performance and Generative Design result generation errors.
As shown in the image below, all results can be generated without any issues on the right laptop. However, on the left laptop and desktop, result generation errors occur.
All conditions were matched with the same Revit file and the same Dynamo file.
I have found mentions of RAM or CPU in the post below, but I have not yet found an exact solution.
Of course, I have confirmed that the Autodesk samples and other files work well.
I have repeatedly checked 100 alternatives on each computer, and all except the right laptop continue to fail to find images and results.
If even the right laptop fails to find results, I will recognize it as a simple Dynamo error on my part. However, there were no issues finding the resulting shapes after running with Dynamo on all computers, and the same problem repeats in GD.
If the Dynamo Team could review the file, I would be happy to share it separately.
Thank you.
On one of the systems which doesn’t work, close everything, then navigate to %appdata%\Dynamo and rename that folder to %appdata%\Dynamo-Old. This will remove all your Dynamo preferences in all Dynamo flavors globally. You’re at step 0; no definitions, no packages, nothing. However we have an archive so we can start to restore stuff.
Next restart Revit and try running a study (still with no packages). If it works (or not) can you let me know?
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Thank you for your response. I found two Dynamo folders, renamed them to “-old,” and confirmed that the settings, including packages, were reset.
However, while the Generative Design results improved slightly, I still cannot find most of the outputs. I’m not sure why most of the outputs are missing, even though it’s a bit better than before.
I’m using Revit 2025.4 version and haven’t used any packages. As mentioned above, the right laptop found all 100 results out of 100. I’m wondering if there are any other solutions.
If you open one of the failing images do you get complete results?
Do the failing images have output data (indicating only the graphics fail)?
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Generative Design completed 100 alternatives, but only 32 out of 100 produced geometry.
And, I Open in Dynamo - failing images and Run.
This process successfully generated Geometry background in Dynamo and connected to Revit for proper family placement.
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Based on the above tests, it has been confirmed that failed image generation results are successfully produced when running in Dynamo. Are there any other methods to resolve generative design image generation failures? I hope to find images for all results.
Unfortunately I’m out of ideas as I haven’t seen that behavior before. @achintya_bhat any thoughts?
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The team is looking into the issue withh 2025.4, and would have a fix soon. The team had narrowed down the issue to be DynamoPlayer dlls being out of sync. The above workaround of removing packages from :\ProgramData\Dynamo\Dynamo Core\3.3\packages, should have fixed this. So, we will need to investigate this further.
@onehojoe Are you able to share the Dynamo logs with us for both of your systems: working laptop vs not working for us to compare?
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@onehojoe I just updated to Revit 2025.4 on my laptop and tried Generative Design and faced similar issue as yourself. I deleted the following packages from C:\ProgramData\Dynamo\Dynamo Core\3.3\packages folder.
After this, I do not see the same issue with Generative design. I did test the Office layout sample and created a study to create 100+ alternatives and see no issue.
So, can you please try the above workaround and let me know if it works for you. If not, we will further investigate and get back to you. Thanks for sharing your logs.
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First of all, I removed 4 folders from desktop’s package folder. However, the same issue occurred. While 8 results were coming out, 6 images were found, and 2 failed. I opened and ran one of 2 failed images with Dynamo. The results generated the shape and results well, as shown in the image below.
The whole thing is still running, but it’s an image error.
If I have to take other measures, I will respond quickly.
@onehojoe Can you also share your logs from GD server, just for the desktop, where you are seeing the issues? You can grab them from here: %appdata%\GenerativeDesign 2025\refinery-server-log.txt.
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sure. refinery-server-log
refinery-server-log.txt (6.3 MB)
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Thanks for sharing. The team will need to investigate and get back to you.
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Its seems like other computers have the same issue. 
Could you please provide any update on the results?
@daria-imbu Just to confirm, you also seeing this issue with Revit 2025.4? If so, can you try the workaround I mentioned above. The team is working on getting a hotfix out for this soon. For now, please try deleting the four packages that I have included in the snippet above from this location: C:\ProgramData\Dynamo\Dynamo Core\3.3\packages folder. This should resolve the performance issue.
We are still looking into the other issue where the options are generation in Dynamo but the image is not showing up in some cases.
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Yes, I seeing the same issue with Revit 2025.4. I tied to delete those four packages, but it doesn’t work for me(
@daria-imbu Just to be clear, you are unable to delete the packages. Or the issue persists even after you delete these package?
