Hi Kaylan, 

In regard to your point 2):

Just to clarify, the issue does not occur when starting completely "from scratch". This issue occurs after a complete simulation run through, when all workflow tabs have green check marks.

It occurs when I go back into the "Solution" tab, change the settings I need to change, then reinitialize the simulation (as i mentioned above i need to initialize because I use of an DEFINE_INIT function to apply an initial temperature distribution within the domain). 

Once the "Initialize" button is clicked, an error code is produced (and repeated) within the console, and then Fluent is forced closed.

Hopefully this clarifies my issue.