I simply edited the already existing poison state by increasing the Ex Parameter Hp/Mp Regeneration (with a - in front so it takes hp/mp away instead of giving it.) When the plugin is on, not only do the states not work but they even remove themselves at the end of the Player's action even when it set it to only be removed by the end of battle.
To make sure it was the plugin I even turn it off for a while and attempted it a 2nd time and it worked as intended. Its only when the plugin is turned on do I have these issues.
I even redownloaded the plugin a 2nd time before commenting this to make sure it was up to date but the issue persists.