I am using the Import Convert Export Wizard to import an LDIF file that modifies the mail attribute of some users. I keep getting this error message: ICE Wizard Error -- The ice process returned an exit code of -255.

This is what is in my LDIF file:
__________________________________________________ ___
version: 1

DN: CN=22BonesKA,ou=Students,ou=TR,o=WY
changetype: modify
replace: mail
mail: 22BonesKA@wyasdgmail.org
__________________________________________________ __________

I have even tried command line but get this at the output back --- or this

Does anyone know what this error means?