Error when running web client configuration

When upgrading a company to use the GP Web Client, I get this error

A loader exception has occurred.

Loader Errors:

- Microsoft.Dynamics.Security.InvalidSecurityContextException: Microsoft.Dynamics.Security.NonExistentSecurityObjectException : The security object does not exist.  Key = 25cc1a21-2cc4-4b13-a1c8-eea186fb688a

  at Microsoft.Dynamics.Security.ValidationHelper.ValidateContext(SecurityContext context)

  at Microsoft.Dynamics.Security.SecurityService.Get(SecurityContext context, Key key)

  at Microsoft.Dynamics.Security.AzManOperationServiceImplementation.GetOperation(SecurityContext context, OperationKey operationKey)

  at Microsoft.Dynamics.GP.GPSecurityMetadataSystemLoader.PerformActionForCustomSecurityOperation(Action action, String operationKey, Keyword keyword, String nameResXId, String descriptionResXId, String resXAssemblyName)

  at Microsoft.Dynamics.GP.GPSecurityMetadataSystemLoader.PerformActionForStandardSecurityOperations(Action action, Type businessObjectType, Keyword keyword, Operation[] serviceOperations)

  at Microsoft.Dynamics.GP.GPSecurityMetadataSystemLoader.PerformActionOnOperationsUpgradeVersion10ToVersion105(Action action)

  at Microsoft.Dynamics.InstallData.Loader.Process(String[] args)