Error publishing Nintex workflow in office 365 sharepoint

Question

I have Created a simple workflow in SharePoint 2013(o365) using Nintex workflow.when I'm trying to publish the workflow I'm getting below error.Im new to this workflow

 

Error publishing workflow. Value cannot be null. Parameter name: g

If the problem persists, contact Nintex support, and quote:

Correlation ID: 0157e7dc-6678-4770-8dde-db6ebec9e950

Tenant ID: 7ec6a3ad-ef56-4f71-a231-a7c5fbb3a63e

Time (UTC): 2015-03-03 12:03:33

 

Any settings i haveto add before publish this workflow .

 

im using office 365 trail and nintex tail.