Hello,
I am using SNAP 12.0.0 with SNAPHU v2.0.4, I attempted to unwrap an image but after 4 tiles were unwrapped I received an error “unexpected or abnormal exit of child process 1745” and the unwrapping tool ended. I’ve attempted a second, separate image and the same thing happened. Has anyone else encountered this and if so what it the workaround?
Thank you.
Update, I attempted downgrading to SNAP 11.0.0 as another user with the same error said this fixed it for them, but this has not fixed the issue for me: Snap 12 unwrapping issues - #3 by profjona
Refer to the quoted thread for another fix recommended and see if it works for you. 
Hi profijona; my apologies for the slow reply, had urgent project work keep me away from my InSAR processing.
I’ve attempted changing the number of rows and columns and overlap as suggested in your other post here: Snaphu Unwrapping Process Problem - SNAP 12 - #4 by profjona but I keep receiving the same message, overlap is too small which I don’t understand how that can be when setting the overlap to 300 with such small numbers of rows and columns. In previous processing I’ve always done 20 x 20 with 0 overlap and have never had this issue before.