Revit cannot run the external application "PyRevitLoader". Contact the provider for assistance. Information they provided to Revit about their identity:.

C:\Users\t.bird>pyrevit env
==> Registered Clones (full git repos)
==> Registered Clones (deployed from archive/image)
master | Branch: "master" | Version: "5.0.0.25034+1521" | Path: "C:\ProgramData\pyRevit"
==> Attachments
master | Product: "Autodesk Revit 2025" | Engine: DEFAULT (2712) | Path: "C:\ProgramData\pyRevit" | AllUsers
master | Product: "2024.3.1" | Engine: DEFAULT (2712) | Path: "C:\ProgramData\pyRevit" | AllUsers
==> Installed Extensions
MFTools | Type: Unknown | Repo: "" | Installed: "Y:\Revit\MF Scripts\pyRevit\MFTools.extension"
==> Default Extension Search Path
C:\Users\t.bird\AppData\Roaming\pyRevit\Extensions
==> Extension Search Paths
Y:\Revit\MF Scripts\pyRevit
==> Extension Sources - Default
https://github.com/pyrevitlabs/pyRevit/raw/master/extensions/extensions.json
==> Extension Sources - Additional
==> Installed Revits
Autodesk Revit 2025 | Version: 25.0.2.419 | Build: 20240307_1300(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2025\"
2024.3.1 | Version: 24.3.10.22 | Build: 20241105_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2024\"
==> Running Revit Instances
PID: 17220 | 2024.3.1 | Version: 24.3.10.22 | Build: 20241105_1515(x64) | Language: 0 | Path: "C:\Program Files\Autodesk\Revit 2024"
==> User Environment
Microsoft Windows 10 [Version 10.0.19045]
Executing User: MAXFORDHAM\t.bird
Active User: MAXFORDHAM\t.bird
Admin Access: No
%APPDATA%: "C:\Users\t.bird\AppData\Roaming"
Latest Installed .Net Framework: 8.0.11
No .Net Target Packs are installed.
No .Net-Core Target Packs are installed.
pyRevit CLI v5.0.0.25034+1521.5254fce169ea7164f9452751d9c91c580e45ef5b