I have development in progress and I keep my DEV work in a separate clone. Now, when I am done with a chunk of my work I want to merge my code back to the main espace. 

On clicking option Combine and Merge with the espace or external file , it takes around 15 mins to open up the window. Then, when I chose file to be merged it crashes everytime and I end up doing manual merge line by line. 

Service Studio Version - 10.0.911.0

Any thought on what could be the possible issue ?

Hello arj,

You may try to upgrade Service Studio, as there is a newer version that can help solve the issue.
But this can also happen, maybe, if the module is too heavy.

I would try to update SS first, and if it does not work, come back and we try to see what is happening.