Changes/fixes have been made, here's the log:

-Removed b_spine01 bone, thus fixing all the hips, as they made it difficult to pose the models properly, and may have caused minor spazzing.

-Fixed minor problems with the models, whether or not they were present in the addon itself.

Known issues since fixing the hips: Models may spawn with the arm(s) sticking out the wrong way, or backwards, however, if you do get this issue, please respawn the model, as it may be difficult to try twisting the arm around. Sadly, there is no way I can fix this issue, so just respawning the model is the best thing for now.