FPSC-Entities (& the segement one) were intentionally left out because they are apparently user-unfriendly (let me be the judge of that Lee!
)
You can still manually create stuff and put it in. To do this follow the steps you listed above. You should have something along these lines:
FPS Creator\Files\entitybank\MyEntities\pizzabox.x
FPS Creator\Files\entitybank\MyEntities\pizzabox.tga
FPS Creator\Files\entitybank\MyEntities\pizzabox.fps
In the .fps file (open with notepad) be sure to carefully change the paths for the model and the texture to point to right ones.
You can also create yourself a small 64x64 .bmp and name it like the .fps file. For example:
FPS Creator\Files\entitybank\MyEntities\pizzabox.bmp
This will then show up in the editor when your browsing for your custom entity (if not the editor will use a default icon: brain-in-a-jar
)
A couple of notes regarding Cartography Shop:
1) I like using it a lot! I hope Josh doesn't change the basic way the interface works for v5 because drag and click rocks for modelling n00bs like me!
ahem
2) Be very careful about sizes. It's VERY easy to create an object way too huge to be seen in FPSC. Make your grid the very smallest you can and zoom in to the center of the grid and experiment. Objects that are about 8 tiny squares x 8 tiny squares are rather large cubes in FPSC so for mr. pizza box you might try something like 2 x 2 x 1 tall... not really sure, you'll have to play with this. Use the surface texturing tools to scale the textures to fit.
3) In my FPSC map editor items made with Cartography Shop show up really dark, but they display fine in the game (I'm having issues with lighting and my video card so this may be specifric to me)
Good luck with and please post your results here (along with maybe a screenie or two?
) I'm interested to see how it works for you