Issue with Model Editor V2

Revit Plugin
1

I click the option to open the Model Editor V2 and I have not been able to open it anymore I get this error.

image
image578Ă—272 12.9 KB

And the Log shows this:

*2025.12.11 11:33:27.265|info|[Create]: DB update
2025.12.11 11:33:28.111|info|[Add]: ModelMetaData success
2025.12.11 11:33:28.112|info|[Add]: SourceModel success
2025.12.11 11:33:28.116|info|[Add]: ScriptParams success
2025.12.11 11:33:28.120|info|[Add]: UserPreferences success
2025.12.11 11:33:28.952|error|[object Object]
2025.12.11 11:33:28.953|error|No model created...
2025.12.11 11:33:29.226|info|[Get]: UserPreferences success
2025.12.11 11:33:29.227|info|[Get]: ScriptParams success
2025.12.11 11:33:29.320|info|Recent POMF loaded...
2025.12.11 11:33:36.636|error| Engine error :(, Traceback (most recent call last):
  File "/lib/python3.13/site-packages/micropip/package_manager.py", line 198, in install
    await transaction.gather_requirements(requirements)
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 75, in gather_requirements
    await asyncio.gather(*requirement_promises)
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 98, in add_requirement
    return await self.add_requirement_inner(Requirement(req))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 211, in add_requirement_inner
    await self._add_requirement_from_package_index(req)
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 289, in _add_requirement_from_package_index
    await self.add_wheel(wheel, req.extras, specifier=str(req.specifier))
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 335, in add_wheel
    await wheel_download_task
  File "/lib/python3.13/site-packages/micropip/wheelinfo.py", line 145, in download
    self._data = await self._fetch_bytes(self.url, fetch_kwargs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python3.13/site-packages/micropip/wheelinfo.py", line 209, in _fetch_bytes
    raise e
  File "/lib/python3.13/site-packages/micropip/wheelinfo.py", line 202, in _fetch_bytes
    bytes = await fetch_bytes(url, fetch_kwargs)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python3.13/site-packages/micropip/_compat/_compat_in_pyodide.py", line 35, in fetch_bytes
    return await (await pyfetch(url, **kwargs)).bytes()
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python313.zip/pyodide/http.py", line 458, in pyfetch
    raise AbortError(e) from None
pyodide.http.AbortError: Failed to fetch

2025.12.11 11:36:36.164|info|[Create]: DB success
2025.12.11 11:36:36.529|info|[Add]: ModelMetaData Key already exists in the object store.
2025.12.11 11:36:36.530|info|[Add]: SourceModel Key already exists in the object store.
2025.12.11 11:36:36.531|info|[Add]: ScriptParams Key already exists in the object store.
2025.12.11 11:36:36.531|info|[Add]: UserPreferences Key already exists in the object store.
2025.12.11 11:36:37.283|error|[object Object]
2025.12.11 11:36:37.283|error|No model created...
2025.12.11 11:36:37.365|info|[Get]: UserPreferences success
2025.12.11 11:36:37.437|info|Recent POMF loaded...
2025.12.11 11:36:37.500|info|[Get]: ScriptParams success
2025.12.11 11:36:41.727|error| Engine error :(, Traceback (most recent call last):
  File "/lib/python3.13/site-packages/micropip/package_manager.py", line 198, in install
    await transaction.gather_requirements(requirements)
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 75, in gather_requirements
    await asyncio.gather(*requirement_promises)
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 98, in add_requirement
    return await self.add_requirement_inner(Requirement(req))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 211, in add_requirement_inner
    await self._add_requirement_from_package_index(req)
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 289, in _add_requirement_from_package_index
    await self.add_wheel(wheel, req.extras, specifier=str(req.specifier))
  File "/lib/python3.13/site-packages/micropip/transaction.py", line 335, in add_wheel
    await wheel_download_task
  File "/lib/python3.13/site-packages/micropip/wheelinfo.py", line 145, in download
    self._data = await self._fetch_bytes(self.url, fetch_kwargs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python3.13/site-packages/micropip/wheelinfo.py", line 209, in _fetch_bytes
    raise e
  File "/lib/python3.13/site-packages/micropip/wheelinfo.py", line 202, in _fetch_bytes
    bytes = await fetch_bytes(url, fetch_kwargs)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python3.13/site-packages/micropip/_compat/_compat_in_pyodide.py", line 35, in fetch_bytes
    return await (await pyfetch(url, **kwargs)).bytes()
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lib/python313.zip/pyodide/http.py", line 458, in pyfetch
    raise AbortError(e) from None
pyodide.http.AbortError: Failed to fetch
2

Hi @contrerasfrancisco,

Sorry about that.

Try to click on the Refresh button a couple of times. It is trying to download the libraries for the first time which can take several minutes and sometimes, depending on your network, fail. Once it is fetched the first time it should work with no issues next time.

3

I have tried a number of times with the refresh. I have a feeling my company’s security system might be blocking it. Right now I am trying with an older version.

4

@mostapha, is there a way to set it back to V1 without being able to access v2.

5

Hi @contrerasfrancisco,

The web page will stay the same for all the versions. Changing to an older version will make it worse. Can you try to open the Model Editor v2 and press Ctrl + Shift + R that should restart the app and clean up the cache which might help with the download issue.

Yes. You can switch back to v1 manually by copying this file to %appdata%\Pollination\model-editor\editor.staging.txt and closing and re-opening the Model Editor. That said, I strongly recommend to try a hard refresh in V2 instead.

editor.staging.txt (39 Bytes)

Let me know how it goes.

6

So the Ctrl+Shift+R did not work, but reverting to V1 did work.

1 Like
7

I see! At least for now you have a solution. Let’s try again once we have a new release of a Revit plugin in a few days.

8

Hi @contrerasfrancisco,

We had a similar issue recently with another customer and it turned out that their company “network security was blocking the ZIP file import for the Python libraries”. Once they unblocked that step everything started working as expected. I thought this might also be the cause for your issue.