I created the LOG files to track what is going wrong - the "exception is thrown" shows up at line 288 of the PADDesigner log file:
{"activityId":"d15fd1d3-9bed-473d-88d0-8168b96f8fb4","agentClientId":"3XR+joIWUvIrX4TmNmqq+ehfmqCYNUyQ","clientRequestId":"","clientSessionId":"25a378f3-47a4-43a8-bdba-824fd7d0c96d","component":"PadDesigner","correlationId":"d15fd1d3-9bed-473d-88d0-8168b96f8fb4","durationInMilliseconds":423,"environmentName":"Default-5ef523dd-e93d-43b9-bfc1-6e210e909974","event":"dataverseschemav2datalayer.getpartialpackage.failure","eventData":{"azureRegionInfo":{"cloud":"tip0","geo":"unitedstates","region":"westus"},"agentVersion":"2.47.00175.24239","executionInfo":{"contextId":0,"is64BitProcess":true,"processName":"PAD.Designer","sessionId":1,"threadId":0},"httpStatusCode":0,"machineInfo":{"netVersion":"4.0.30319.42000","physicalMemoryMB":32540,"physicalFreeMemoryMB":22341,"processorCount":12,"screenInfo":[{"dpi":100,"height":1080,"isPrimary":true,"width":1920},{"dpi":100,"height":1200,"isPrimary":false,"width":1920}],"cpuLoad":16,"memoryLoad":31,"windowsProductName":"Windows 10 Enterprise"},"machineRegistrationInfo":{"registrationDetails":{"id":"","machineGroupId":"","registrationState":"Unregistered"},"runEnvironmentDetails":{}},"localeInfo":{"appLocale":"en-US"},"osInfo":{"architecture":"Win32NT","buildNumber":"19045","editionId":"Enterprise","is64Bit":true,"isInsidersEnabled":false,"locale":"en-US","name":"Microsoft Windows NT 10.0.19045.0","releaseId":"2009","ring":"Retail","ubr":"4894","version":"10.0.19045.0"},"padFlowInfo":{"activeLogScenarios":["application.designer.start"],"debuggerPictureInPictureIsEnabled":false,"environmentInfo":{"isFlowSigningEnabled":false,"isPayAsYouGo":false,"usesNewSchema":true,"newSchemaSolutionIsValid":true},"event":"dataverseschemav2datalayer.getpartialpackage.failure","flowId":"9e756218-f80b-4b7b-b865-724ba99dd3d9","flowSchema":"V2","isExampleWorkFlow":false,"isCopilotWorkflow":false,"isProcessInsights":false,"parentCorrelationId":"32bb1bf8-34aa-4ed3-afdf-805165071143","servicePlanInfo":{"hasTrialExpiredRpaServicePlan":false,"servicePlanStatus":"Active","servicePlanType":"Trial"}},"padInfo":{"installationInfo":{"installationType":"Msi"},"verboseLoggingInfo":{"isEnabled":true},"appIsRunningAsAdministrator":false},"processInfo":{"handleCount":1114,"memoryWorkingSetMB":206,"peakMemoryWorkingSetMB":208,"cpuLoad":4,"startTime":"2024-09-30T13:53:53.5862751Z"}},"eventDataSchemaVersion":"1.0","eventTimestamp":"2024-09-30T13:53:58.3915932Z","eventType":"NotSpecified","exception":"Newtonsoft.Json.JsonSerializationException: Cannot create and populate list type System.Collections.Generic.IReadOnlyList`1[Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Entities.ConnectionReference]. Path '', line 1, position 1.\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateNewList(JsonReader reader, JsonArrayContract contract, Boolean& createdFromNonDefaultCreator)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)\r\n at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Converters.JsonStringConverter.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.DeserializeConvertable(JsonConverter converter, JsonReader reader, Type objectType, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)\r\n at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)\r\n at System.Threading.Tasks.Task`1.InnerInvoke()\r\n at System.Threading.Tasks.Task.Execute()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Extensions.HttpResponseMessageExtensions.<ToJsonApiResponseAsync>d__0`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Http.CdsHttpClientWrapper.<GetResponseAndReadJsonAsync>d__21`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Http.CdsHttpClient.<GetWorkflowSchemaV2ByIdAsync>d__96.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Adapters.DataLayers.SchemaV2DataLayer.<GetPackageInnerAsync>d__37.MoveNext()","exceptionHResult":-2146233088,"exceptionStackTrace":" at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateNewList(JsonReader reader, JsonArrayContract contract, Boolean& createdFromNonDefaultCreator)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)\r\n at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Converters.JsonStringConverter.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.DeserializeConvertable(JsonConverter converter, JsonReader reader, Type objectType, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)\r\n at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)\r\n at System.Threading.Tasks.Task`1.InnerInvoke()\r\n at System.Threading.Tasks.Task.Execute()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Extensions.HttpResponseMessageExtensions.<ToJsonApiResponseAsync>d__0`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Http.CdsHttpClientWrapper.<GetResponseAndReadJsonAsync>d__21`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Http.CdsHttpClient.<GetWorkflowSchemaV2ByIdAsync>d__96.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.Flow.RPA.Desktop.Shared.Clients.DataClients.Cds.Adapters.DataLayers.SchemaV2DataLayer.<GetPackageInnerAsync>d__37.MoveNext()","exceptionType":"Newtonsoft.Json.JsonSerializationException","installationType":"Msi","message":"dataverseschemav2datalayer.getpartialpackage.failure","operationName":"SchemaV2DataLayer.GetPartialPackageAsync","principalOid":"ab111c1b-a060-406c-aff8-a658894a5ee8","principalPuid":"10037FFE9C26C828","schemaVersion":"1.0","scriptId":"9e756218-f80b-4b7b-b865-724ba99dd3d9","tenantId":"5ef523dd-e93d-43b9-bfc1-6e210e909974","traceLevel":"Error","version":"2.47.00175.24239","isRequiredLogEvent":true,"roleInfo":{"geo":"unitedstates","region":"westus","environment":"tip0"}}