Object reference not set to an instance of an object

Hi Community,

I've an custom assembly package, with a custom business process.

In the business process I added a script block element.

If I move a process element to the designer and try to save, I get the error "Object reference not set to an instance of an object."

To solve the problem I have to change something in the script block and save the BP.

Is there any other way to do this?

In the Error.log file there is this error:

2022-05-17 09:40:55,788 [92] ERROR IIS APPPOOL\creatio Terrasoft Post - ManagerServiceLog - ErrorCode = NullReferenceException; Message = Object reference not set to an instance of an object.; InnerException: ; StackTrace =    in Terrasoft.Core.Process.ProcessSchemaManager.GetIsProcessExistsInAssembly(ProcessSchema processSchema)

   in Terrasoft.Core.Process.ProcessInterpretationValidator.ChangedSchemaMethodsRule.ValidateCompiledMethodsInAssembly(ProcessSchema processSchema)

   in Terrasoft.Core.Process.ProcessInterpretationValidator.ChangedSchemaMethodsRule.Validate()

   in Terrasoft.Core.Process.BaseInterpretationValidator`1.Validate(TProcessSchema processSchema, List`1 validationRules, Boolean checkAllRules)

   in Terrasoft.Core.Process.ProcessSchemaManager.GetProcessValidationResult(ProcessSchema process, UserConnection userConnection)

   in Terrasoft.Nui.ServiceModel.WebService.BaseProcessSchemaDesigner`1.ValidateSchema(ISchemaManagerItem item, BaseProcessSchemaResponse response)

   in Terrasoft.Nui.ServiceModel.WebService.BaseProcessSchemaDesigner`1.Save(ContractBaseProcessSchema`1 schema, BaseProcessSchemaResponse response)

   in Terrasoft.Nui.ServiceModel.WebService.ProcessSchemaManagerService.Post(ContractProcessSchema processSchema)