X10DT: error in configuration validation for "Remote connection" to localhost

To run an X10 program on the local machine using the C++ backend and OpenMPI, it is necessary to create a Remote connection (as OpenMPI is not a supported option for a Local connection).

I created an OpenMPI Remote connection for local host using password-based authentication. On selecting Validate Configuration, I received the following error:

Error: cd: 1: can't cd to /tmp/x10-validation-josh-01-09-19
g++: Hello.cc: No such file or directory
g++: no input files

Checking afterwards, the directory /tmp/x10-validation-josh-01-09-19 does not exist.

My x10_platform.conf is attached.