Provide error information to user for segment folder

[Abe404]

If there are errors with the segment folder command i.e some specific images are not processed, then this information should be presented to the user. It may be that specific files are corrupt and the user could try to remove or replace them. Either way we should provide the detailed error message to the user (raw output from server) and let them know what went wrong so they can try to debug the issue themselves.