Can anyone help with “Unable to load workflow actions from the server SharePoint designer 2013” error?

Hello Friends,

Can anyone help me on below issue:

I am working on SP 2007-2010-2013 migration project. After migration in SP 2013, when i opened workflow in SPD 2013 it is showing me platform type “SharePoint 2010 workflow” also when i was going to create a new workflow it was showing me only SP 2010 workflow in platform drop down for that issue resolution i configured “workflow service application proxy”  successfully with service account. Service showing me workflow is connected.

But when i am going to create new list workflow or clicking on existing SP 2010 platform workflow getting below error: “Unable to load workflow actions from the server SharePoint designer 2013”

Please suggest.

Looking forward to hear from your earliest convenience.

Thanks,

Ashutosh