Hi @Caleb_D2
I am able to resolve issue by removing and adding again one workflow.
There was one Invoke Workflow activity was caused this issue. This is really strange that I tried to remove that InvokeWorkflow activity and it worked. It was in init phase of framework. Tried to remove one by one and run. (Not Fun activity though 
)
You need to add it again and it does not show you this error.
In your case this might be different but posting solution for my error.
Anil_G
A_Learner
19learningcurve
SorenB
kulasinghasampath