I'm guessing you're running into a bug with SRB2 v2.1.13, which causes warping to a map to crash if it doesn't have a level header. To work around the issue, simply create a level header for the map.
I believe you still have to have an object present, but I haven't worked with teleporters for...
Those automatically show up on the vertices of any triangle-shaped sector, allowing you to quickly slope the floor or ceiling.
If you want to hide them, use the "Toggle Visual Vertices" action, or click this toolbar button next to the "Test Map" option:
Mainly changes to custom object properties, making it easier for custom object definitions to support both Zone Builder and Ultimate Zone Builder.
Unknown properties of Lua objects are now ignored instead of throwing an error
Added $Title, $Angled and $NotAngled as valid...
For editing binary maps, see the original Zone Builder.
While they can technically be loaded in Ultimate Zone Builder, it's strongly discouraged to make any edits, as this will likely break your binary map.
Ultimate Zone Builder is a map editor designed specifically for SRB2's UDMF map...
SRB2's version of SDL was updated, which influenced how axis handling works, which is why the defaults are not the same as earlier versions of 2.2. This is not a bug, and there's no good reason that the defaults "must" be the same as older 2.2 releases.
What does the Kart configuration in your Game Configurations (F6) window look like? From what I can tell, it looks like you didn't add the resources, or added them incorrectly.
You'll need srb2.srb, textures.kart and gfx.kart, which should all be loaded as WAD files, not as PK3 files.
Now that 2.2.11 is out, it's time for Zone Builder's last big update, as development will now shift over to Ultimate Zone Builder.
As such, do not expect this ZB update to add UDMF support; however, many of these changes and additions will certainly ease the transition to working with UZB...