convincing toon look is a tough job.
I would surface the character to be very flatter shaded and have more obvious toon lines and animate it at 12 fps whenever possible. I would not do a lot of polished CG moving holds and eases.
To keep a ring from squishing you will need to have it on its own bone or smartskin it to correct the squish.
I'd also make the limbs thicker. Even "rubber-hose" style arms and legs weren't that thin. There should be some area for the color inside the toon lines.
On S12, it is possible to do a long "hang-time" at the top of the jump but he can't really hang there, it's a matter of slowly passing thru that peak rather than stopping at it.
You want the light to have a pattern or other arbitrary shape to it?
You can paint the shape on a (typically) square bitmap in a paint program and drop it on a klieg light. I believe black is opaque and white is transparent and you can blur your shape in the paint program for fuzzy edges if you want them.
Note that the light will only use the circular area that can fit inside the square.
I'm not sure what I'm looking at in that screen shot.
AFAIK, a PRJ is a PRJ in any version.
PRJs can have things embedded in them or they can reference files that are not embedded and saved elsewhere.
I can't tell exactly but maybe you left some five-point areas when you deleted a spline. The other splines would still be there but not fill in.
If there's something there you don't want, you can still select it and delete it.
A new OS will be like a new computer. You'll need a new code.
I doubt they've blocked you. Try a brief message on their facebook page mentioning that you can't get an email message thru.
can no longer update? The v15j installer won't run?