Sharepoint 2010 Workflow successful: Sharepoint 2013 Workflow UNsuccessful:

Question

Observation 1 
1. I created 2 workflows that write "completed" to the workflow history 
a. 1 workflow uses sp2010 workflow manager 
b. 1 workflow uses sp2013 workflow manager 
2. sp2010 workflow works fine; it will start either manually or automatically (when a new item is created ) without issue; "completed' is written to the log as expected. Good. 
3. sp2013 does not start automatically (when a new item is created ); when trying to start manually I get error message "Something went wrong. To try again, reload the page and then start the workflow." Which I do, but still fails.
Bad. 
4.On Workflows.aspx I can see the links to start the 2 workflows manually. 
a. When I hover over the sp2010 workflow link I can see something that look like this: 
http://playground/sites/falcontt/_layouts/15/IniWrkflIP.aspx?List={ae95de8e-508b-4aa6-b4b6-490288e35e9f}&ID=53&ItemGuid={697E4218-D889-4FB8-A27B-D188F5D93250}&TemplateID={199c3d86-89a8-4286-b285-37e2d2067b52}&Source=http%3A%2F%2Fplayground%2Fsites%2Ffalcontt%2FLists%2FTrouble%2520Tickets%2Fall%2520requests%2Easpx 
b. But when I hover over the sp2013 workflow link I can see something that look like this: 
javascript:StartWorkflow4('949cb889-9b46-4959-9673-842e60cc5a42', '53', '{697E4218-D889-4FB8-A27B-D188F5D93250}') 
Should this link also look similar to the sp2010 workflow link? If so, do you have any idea why it is different? 
Observation 2 
In Sharepoint Designer 2013, when I goto Navigation -> Workflows and click on the 2010 workflow, I see a file listed under "Forms" that looks like this "sp2010 test workflow.xsn". By the way the name of the workflow happens
to be "sp2010 test workflow". 
But when I goto Navigation -> Workflows and click on the 2013 workflow, I see a NO file listed under "Forms". Should I see "sp2013 test workflow.xsn" listed there? If yes, can you think of why it is not listed there? 
I saved the workflow debug logs from Event Viewer but won't share that info here unless necessary, to avoid making things look more complicated than they have to be. 
Thanks for any comments suggestions, tips, questions, anything, etc. 
Thanks and have a great weekend. 
George 

Answer 1

Hi George,
First of all, I'd like to clarify that workflow manager is dedicated for SharePoint 2013 workflow platform. SharePoint 2010 workflow is integrated in SharePoint server, while 2013 workflow is based on a new platform named workflow manager server.
In SharePoint 2013 designer, 2010 workflow has forms while 2013 workflow doesn't have forms.
For this issue, I suspect there is something incorrect with workflow manager. From the error message "Something went wrong. To try again, reload the page and then start the workflow",  please flush the DNS cache via executing
IPCONFIG /FLUSHDNS, and restart workflow manager related services such as below, then recreate 2013 workflow to test the issue:
Service Bus Gateway
Service Bus Message Broker
http://blog.houratious.com/2014/05/sharepoint-2013-workflow-something-went.html
Regards,
Rebecca Tu
TechNet Community Support