Currently experiencing an error with the Model Editor from Pollination Revit Version 3.10 not allowing me to save Pollination Model (.pomf) files. I am able to get to the prompt to save a .pomf file, but upon clicking save, the file does not actually get saved to where I’ve specified.
I’ve checked and the desktop version is able to save .pomf files, just not the Revit version.
Please let me know if there’s something I’m missing here.
Hi @stolzyhe01,
Sorry about that. Can you share the logs with us? Do you see any errors there? It is very strange that the error only happens inside Revit.
Sure, here’s a recent log, I believe this shows me attempting to save the model several times.
`2026-06-30 10:05:58.401 -04:00 [INF] Key | Activation: user data found from LexActivator`
`2026-06-30 10:05:58.408 -04:00 [INF] ServiceHub | Processing ModelEditorService.SaveFileDialog.`
`2026-06-30 10:06:03.487 -04:00 [INF] ServiceHub | Completed ModelEditorService.SaveFileDialog.`
`2026-06-30 10:06:03.488 -04:00 [ERR] ServiceHub | Error processing request ‘ts_9e972173-fdd4-4474-8193-325a6afe87fd’ for method ‘ModelEditorService.SaveFileDialog’`
`System.ArgumentException: invalid WebView2!`
`at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)`
`at Pollination.BrowserMessageHandler.ServiceHub.d__32.MoveNext()`
`2026-06-30 10:06:03.519 -04:00 [INF] ServiceHub | Received ModelEditorSDK message, expecting Pollination.RevitPluginSDK.`
`2026-06-30 10:06:09.896 -04:00 [INF] Key | Activation: user data found from LexActivator`
`2026-06-30 10:06:09.896 -04:00 [INF] ServiceHub | Processing ModelEditorService.SaveFileDialog.`
`2026-06-30 10:06:15.002 -04:00 [INF] ServiceHub | Completed ModelEditorService.SaveFileDialog.`
`2026-06-30 10:06:15.002 -04:00 [ERR] ServiceHub | Error processing request ‘ts_fce346f1-63c3-421f-aebf-e50520b0d036’ for method ‘ModelEditorService.SaveFileDialog’`
`System.ArgumentException: invalid WebView2!`
`at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)`
`at Pollination.BrowserMessageHandler.ServiceHub.d__32.MoveNext()`
`2026-06-30 10:06:15.023 -04:00 [INF] ServiceHub | Received ModelEditorSDK message, expecting Pollination.RevitPluginSDK.`
`2026-06-30 10:24:56.171 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:24:56.203 -04:00 [INF] ServiceHub | Processing RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:24:56.213 -04:00 [INF] ServiceHub | Completed RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:24:56.454 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:24:56.478 -04:00 [INF] ServiceHub | Processing RevitPluginService.ExtractRooms.`
`2026-06-30 10:24:56.486 -04:00 [INF] ServiceHub | Completed RevitPluginService.ExtractRooms.`
`2026-06-30 10:29:07.620 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:29:07.654 -04:00 [INF] ServiceHub | Processing RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:29:07.665 -04:00 [INF] ServiceHub | Completed RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:29:08.057 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:29:08.081 -04:00 [INF] ServiceHub | Processing RevitPluginService.ExtractRooms.`
`2026-06-30 10:29:08.091 -04:00 [INF] ServiceHub | Completed RevitPluginService.ExtractRooms.`
`2026-06-30 10:30:36.667 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:30:36.687 -04:00 [INF] ServiceHub | Processing RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:30:36.695 -04:00 [INF] ServiceHub | Completed RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:30:37.017 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:30:37.042 -04:00 [INF] ServiceHub | Processing RevitPluginService.ExtractRooms.`
`2026-06-30 10:30:37.055 -04:00 [INF] ServiceHub | Completed RevitPluginService.ExtractRooms.`
`2026-06-30 10:32:12.802 -04:00 [INF] Key | Activation: user data found from LexActivator`
`2026-06-30 10:32:12.803 -04:00 [INF] ServiceHub | Processing ModelEditorService.SaveFileDialog.`
`2026-06-30 10:32:18.894 -04:00 [INF] ServiceHub | Completed ModelEditorService.SaveFileDialog.`
`2026-06-30 10:32:18.894 -04:00 [ERR] ServiceHub | Error processing request ‘ts_2c6b267b-6cf5-41c2-9136-17c0bef6a697’ for method ‘ModelEditorService.SaveFileDialog’`
`System.ArgumentException: invalid WebView2!`
`at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)`
`at Pollination.BrowserMessageHandler.ServiceHub.d__32.MoveNext()`
`2026-06-30 10:32:18.940 -04:00 [INF] ServiceHub | Received ModelEditorSDK message, expecting Pollination.RevitPluginSDK.`
`2026-06-30 10:40:04.898 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:40:04.930 -04:00 [INF] ServiceHub | Processing RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:40:04.937 -04:00 [INF] ServiceHub | Completed RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:40:05.173 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:40:05.200 -04:00 [INF] ServiceHub | Processing RevitPluginService.ExtractRooms.`
`2026-06-30 10:40:05.215 -04:00 [INF] ServiceHub | Completed RevitPluginService.ExtractRooms.`
`2026-06-30 10:43:08.560 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:43:08.580 -04:00 [INF] ServiceHub | Processing RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:43:08.594 -04:00 [INF] ServiceHub | Completed RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:43:08.848 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:43:08.870 -04:00 [INF] ServiceHub | Processing RevitPluginService.ExtractRooms.`
`2026-06-30 10:43:08.882 -04:00 [INF] ServiceHub | Completed RevitPluginService.ExtractRooms.`
`2026-06-30 10:46:35.592 -04:00 [INF] Key | Activation: server sync callback: [LA_OK]. Licensed: True`
`2026-06-30 10:50:32.107 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:50:32.127 -04:00 [INF] ServiceHub | Processing RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:50:32.138 -04:00 [INF] ServiceHub | Completed RevitPluginService.GetRoomExportSettings.`
`2026-06-30 10:50:32.348 -04:00 [INF] ServiceHub | Received Pollination.RevitPluginSDK message, expecting ModelEditorSDK.`
`2026-06-30 10:50:32.369 -04:00 [INF] ServiceHub | Processing RevitPluginService.ExtractRooms.`
`2026-06-30 10:50:32.379 -04:00 [INF] ServiceHub | Completed RevitPluginService.ExtractRooms.`
Thank you for sharing the logs, @stolzyhe01! Here is the error.
`2026-06-30 10:32:18.894 -04:00 [ERR] ServiceHub | Error processing request ‘ts_2c6b267b-6cf5-41c2-9136-17c0bef6a697’ for method ‘ModelEditorService.SaveFileDialog’`
`System.ArgumentException: invalid WebView2!`
`at PollinationBrowserControl.BrowserControl.PostMessageJson(String json, Boolean sendChunked)`
This is similar to this issue: Model Editor Commands Not Working
Do you get an error about PowerShell being blocked when you open Revit? Here is an installer that addresses that specific issue.
Also, are you able to save as the file as a DFJSON instead of trying to save as PoMF? That way we can recover your current work after updating the installation.
I was not receiving an error about PowerShell being blocked… It also seems like I can’t save ANY files from the Revit model editor, after testing out saving with the export function. Also, I am unable to access that google drive link due to website security restrictions, is there any way else I can try that installer?
Can you try this link instead and see if it works?
Since the desktop version works, another suggestion is to try to close and reopen the Model Editor and see if that resolves the problem for you before installing a new version.
Really ought to try the simplest solution first… A restart of Revit seems to have everything in order now. But I’m wondering what could cause this, since I remember running into an issue of not being able to save .pomfs but still being able to export.
Though I do want to note, previously when opening the model editor this banner (below) showed Model Editor / [Revit Project File Name] instead of My Snapshot.
Either way , thanks for the help!
Hi @stolzyhe01,
I’m glad to here that.
It would be great if you can get in touch if it happens again so we can help you to resolve it.
This is most likely happening because we temporarily reverted back the version of the Model Editor to address an incompatibility issue. You should see the previous behavior once we publish the new version of the Revit plugin and the Model Editor.