Unable to run any workflow

Help
1

Hi All,

I installed UIPath Community Edition 2019.7 version but when i try to run any workflow am getting below error.

Any one faced this kind of issue ? Could you please help me in this.

Note: I uninstalled and installed it again two times but getting same error.

UiPath_Error
UiPath_Error1366×768 90.2 KB

System.ServiceModel.FaultException1[System.ServiceModel.ExceptionDetail]: Could not load file or assembly 'UiPath.Activities.Contracts, Version=19.7.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is: System.IO.FileNotFoundException: Could not load file or assembly 'UiPath.Activities.Contracts, Version=19.7.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. at System.Signature.GetSignature(Void* pCorSig, Int32 cCorSig, RuntimeFieldHandleInternal fieldHandle, IRuntimeMethodInfo methodHandle, RuntimeType declaringType) at System.Reflection.RuntimeMethodInfo.FetchNonReturnParameters() at System.Reflection.RuntimeMethodInfo.GetParameters() at Newtonsoft.Json.Serialization.DefaultContractResolver.GetCallbackMethodsForType(Type type, List1& onSerializing, List1& onSerialized, List1& onDeserializing, List1& onDeserialized, List1& onError)
at Newtonsoft.Json.Serialization.DefaultContractResolver.ResolveCallbackMethods(JsonContract contract, Type t)
at Newtonsoft.Json.Serialization.DefaultContractResolver.InitializeContract(JsonContr…).

2

Try deleting project.json file and start the project from Main.xaml file.

2 Likes
3

@srdjan.suc

Tried this option as well but got same error.

I uninstalled UIPath Community Edition and then installed Enterprise Edition and acquired license from Orchestrator Community Edition and then its working fine.

But don’t know what’s the problem with Community Edition :frowning:

1 Like
4

Hi @lakshman

Thinking that certain dll files are missing while installing the CE

Thanks
Ashwin.S

1 Like
5

@lakshman
I believe it is happening in init stage.
I have also experienced similar once , what I did is replaced init stage’s activity with newly created RE project . This has solved for me .

1 Like
6

Hi @lakshman

I recommand a method maybe it will help for you.
First delete your AppData\Local\UiPath\app-19.7.0 folder,
after that your UiPath Studio will back to 2019.6 when you it run again.
The content of 2019.7 will be automately downloaded again,
and the issue will be cleared.

1 Like
7

@md.ahtesham

I just used message box activity and ran the workflow. I didn’t use REFramework and all.

8

@wusiyangjia

Will try this one.

9

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