metric_plasma.ini is a sim file from a plasmac axis config, you don't need that.
As Clive s says, you have four joints in plasma_m.ini and three in plasma_m.hal.
The Torch On HAL pin in the Configurator needs to be an out pin.
The error message you show refers to a plasmax_connections.hal which does not exist in plasma_m.ini.
plasma_m.ini looks like it was created by hand, it has axis as the gui yet has all the gmoccapy glade panels and no user_command_file. Why are you hand editing the file, the configurator will do this for you AFTER you have a working machine.
It seems that you have not comprehended that you need to have a working machine before you attempt to add the PlasmaC config. Your machine could not have worked with the ini and hal file you have posted.
I can only suggest that you delete your configs then use stepconf to create a config named base_machine to get your machine working properly WITHOUT Arc OK, Float Switch, Torch On, Move Up and Move Down.
When you have achieved that and only then you can run configurator to create a config named something_different_to_base_machine. That way you will always have a copy of the working base machine as a backup.