We are running EPiServer CMS 12.32.3. We have serveral different PropertyLists on our site and have been using them for years. 

But now I have run into an issue where I get a TypeMismatchException that craches the site when I start it the first time after adding a new PropertyList with a new PropertyDefinitionTypePlugIn. If I restart the site after the crash everything works as expected and I can use the PropertyList as intended. Has anyone else run into this issue? Does anyone know how I can fix it?

Below is an example of the error I get on the first startup after adding a brand new PropertyList.

2025-03-20 10:32:57.671 [Error] Hosting failed to start
EPiServer.Framework.Initialization.InitializationException: Initialize action failed for Initialize on class EPiServer.Initialization.Internal.ModelSyncInitialization, EPiServer, Version=12.22.3.0, Culture=neutral, PublicKeyToken=8fe83dea738b45b7
 ---> EPiServer.Core.TypeMismatchException: Type 'System.Collections.Generic.IList`1[[CMS.Models.Blocks.Utbildning.StudieplanversionData, CMS.Models, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]' could not be mapped to a PropertyDefinitionType
   at EPiServer.DataAbstraction.RuntimeModel.Internal.PropertyDefinitionSynchronizer.ResolveType(PropertyDefinitionModel model)
   at EPiServer.DataAbstraction.RuntimeModel.Internal.PropertyDefinitionSynchronizer.CreatePropertyDefinition(PropertyDefinitionModel model, Int32 contentTypeID)
   at EPiServer.DataAbstraction.RuntimeModel.Internal.ContentTypeModelRegister.CommitProperties(Boolean deleteUnusedTypes)
   at EPiServer.DataAbstraction.RuntimeModel.Internal.ContentTypeModelScanner.Sync(Boolean forceCommit)
   at EPiServer.Initialization.Internal.ModelSyncInitialization.Initialize(InitializationEngine context)
   at EPiServer.Framework.Initialization.Internal.ModuleNode.<>c__DisplayClass4_0.<Initialize>b__0()
   at EPiServer.Framework.Initialization.Internal.ModuleNode.Execute(Action a, String key)
   at EPiServer.Framework.Initialization.Internal.ModuleNode.Initialize(InitializationEngine context)
   at EPiServer.Framework.Initialization.InitializationEngine.InitializeModules()
   --- End of inner exception stack trace ---
   at EPiServer.Framework.Initialization.InitializationEngine.InitializeModules()
   at EPiServer.Framework.Initialization.InitializationEngine.ExecuteTransition(Boolean continueTransitions)
   at EPiServer.Framework.Initialization.InitializationEngine.Initialize()
   at EPiServer.Hosting.Internal.EPiServerFrameworkHost.StartAsync(CancellationToken cancellationToken)
   at Microsoft.Extensions.Hosting.Internal.Host.<StartAsync>b__15_1(IHostedService service, CancellationToken token)
   at Microsoft.Extensions.Hosting.Internal.Host.ForeachService[T](IEnumerable`1 services, CancellationToken token, Boolean concurrent, Boolean abortOnFirstException, List`1 exceptions, Func`3 operation)