Is anyone else having an issue when trying to open Dyanmo in Revit 2025? I have even uninstalled and reinstalled Revit but the error persists. Dynamo will open just fine in other versions of Revit 2023, 2024.
The error message is below.
System,lO.FileLoadException: Could not load file or assembly ‘Prism,
Version—8.1.97.5141, Culture—neutral,
PublicKeyToken=40ee6c3a2184dcS9’, Could not find or load a specific
file. (080131621)
File name: ‘Prism, Culture—neutral,
PublicKeyToken=40ee6c3a2184dc59’
System,IO.FileLoadException: Could not load file or assembly
‘Prism, Version=8.1.97.5141, Culture—neutral,
PublicKeyT0ken=40ee6c3a2184dcS9’.
at
< LoadFromPath> g
_ptrNatweAssembly8inder_native, Ulnt16
ilPath_native, IJInt16* _niPath_native, ObjectHandleOnStack
_retAssembly_nattve)
at
System, Runtime, Loader,AssemblyLoadContext. Load FromAssemblyPath(St
ring assemblyPath)
at assemblyFile)
at System,Reflection.Assembly.LoadFromResolveHandler(Object
sender, ResolveEventArgs args)
at
System. olveEvent(Resol
veEventHandler eventHandler, RuntimeAssembly assembly, String name)
at
Dynamo. ViewModels.PackageManagerClientViewModel… ctor(DynamoVi
ewModel dynamoViewModel, PackageManagerClient model)
at Dynamo.ViewModels.DynamoViewModel… ctor(StartConfiguration
startConfiguration)
at
Dynamo Applications,ViewModel.DynamoRevitViewModel. .ctor(StartCo
nfiguration startConfiguration)
at
Dynamo.Applications.ViewModel.DynamoRevitViewModel.Start(StartCo
nfiguration startConfiguration)
at
Dynamo.Applications,DynamoRevit,lnitializeCoreViewModel(RevitDynam
oModel revitDynamoModel)
at
Dynamo.Applications.DynamoRevit.LoadDynamoWithoutSplashScreen0
at
Dynamo.Applications.DynamoRevit.ExecuteCommand(DynamoRevitCom
mandData commandData)