So Ive been making terrains for a while but today my laptop lid was closed.
Houdini crashed, and I re-opened terrain file.

Now my terrain is stuck in this flat mode in the viewport, but renders fine.

Any ideas on how to make my viewport display the deformed terrain again?


sorry im a n00b!!!

Sounds like a glitch. If you are just starting out try recreating the height field from the shelf tools. Keep your existing flat version open in case you need to copy some values from that one.