Bizarre problem with my new character

[Fawfulfan]

When I loaded up my character WAD, this error appeared in the console:

Warning: Mobj of type 83 with invalid sprite data (34) detected and removed.

I explored the level, and discovered that the 1-up monitors had vanished. Then, when I completed the level, the sign vanished when I hit it, saying:

Warning: Mobj of type 83 with invalid sprite data (37) detected and removed.

I thought it might be a problem with my PRUPI0, PRUPJ0, and SIGNH0 graphics lumps, so I deleted them. But when I tried my character again, the errors still happened.

WHAT IS THIS!?!?!?!?!?!?!?!?!?!?!?!?!?

 

[Senku Niola]

That's the new system, they all use c-o, in the order of: life monitor c, static monitor d, little icon that comes from monitor e, sign f, super transform g-o.

 

[Fawfulfan]

I don't understand. What will I have to call the sprites if I want them to act like PRUPI0, PRUPJ0, and SIGNH0 from 1.09.4?