I’m trying to use pollination for Revit, plugin version 3.20.9 in Revit 2026. The model is relatively simple, but once I start the Model Editor, I try to save the file, but no file is created. I tried to import the spaces, roofs, windows, doors, and shades (in case the file being empty was the issue), but it still wouldn’t actually save, despite the menus all working. I tried to export the model, but it again failed to create any files, no matter what I tried to export it to.
I am currently trying to uninstall and reinstall the plugin completely to see if that fixes the issue.
My license is part of a pool for a company, but I’m the only one trying to use pollination at this time.
As a new user, I couldn’t upload my logs, and they are too big for the text content.
“error” occurs four times in the log:
Error One
2026-08-12 11:42:45.998 -06:00 [INF] Key | Activation: user data found from LexActivator
2026-08-12 11:42:45.998 -06:00 [INF] ServiceHub | Processing ModelEditorService.SaveFileDialog.
2026-08-12 11:42:53.660 -06:00 [INF] ServiceHub | Completed ModelEditorService.SaveFileDialog.
2026-08-12 11:42:53.661 -06:00 [ERR] ServiceHub | Error processing request ‘ts_8be88cb7-bb7b-43cb-bc6b-315ae17f001c’ for method ‘ModelEditorService.SaveFileDialog’
System.ArgumentException: invalid WebView2!
at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)
at Pollination.BrowserMessageHandler.ServiceHub.HandleRequestMessageReceived(RequestMessageBus request, Boolean wasChunked, Action`2 returnAct)
Error Two
2026-08-12 11:43:42.363 -06:00 [ERR] ServiceHub | Error processing request ‘ts_57831d1b-c37c-4638-9a96-f492e2f0ef14’ for method ‘ModelEditorService.SaveFileDialog’
System.ArgumentException: invalid WebView2!
at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)
at Pollination.BrowserMessageHandler.ServiceHub.HandleRequestMessageReceived(RequestMessageBus request, Boolean wasChunked, Action`2 returnAct)
Error Three
2026-08-12 11:46:37.632 -06:00 [ERR] ServiceHub | Error processing request ‘ts_38e57914-af9a-4e8b-a1d6-add222893c41’ for method ‘ModelEditorService.OpenLicenseManager’
System.ArgumentException: invalid WebView2!
at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)
at Pollination.BrowserMessageHandler.ServiceHub.HandleRequestMessageReceived(RequestMessageBus request, Boolean wasChunked, Action`2 returnAct)
Error Four
2026-08-12 11:47:10.386 -06:00 [ERR] ServiceHub | Error processing request ‘ts_eda6e327-7a4f-4610-9b6b-1df5e1148e79’ for method ‘ModelEditorService.SaveFileDialog’
System.ArgumentException: invalid WebView2!
at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)
at Pollination.BrowserMessageHandler.ServiceHub.HandleRequestMessageReceived(RequestMessageBus request, Boolean wasChunked, Action`2 returnAct)
Hi @dpratt, thank you for sharing the errors. I made you a member so you can upload files. Try zipping the log file and upload it here.
Can you also try the Desktop version and see if that works? If the desktop version works, then this could be a dependency issue. We had a similar issue which was resolve after a restart.
Have you tried testing it in the Desktop version? This would help us narrow down whether the issue is caused by dependency conflicts with other Revit plugins.
Can you also try the Desktop version and see if that works? If the desktop version works, then this could be a dependency issue. We had a similar issue which was resolve after a restart.
After deleting all the appdata folders and getting a fresh install, it is still not working. logs.revit2026081308.zip (4.9 KB) logs.ModelEditorApp2026081308.zip (5.3 KB)
I tried the desktop model editor, but there’s no way for me to get data from Revit that way. There was a license issue, but it seemed to resolve itself after logging out and in again. I was able to save the the default model after loading it from the About menu.
One thing I noticed in comparing the logs of the Revit plugin and the Desktop model editor is that they seem to be calling and expecting the opposite SDKs:
welcome to the forum!
