I'm cycling through a number of map entities in a 'preview' window via ent_morph(), and have noticed that, as each is loaded, it seems to be retained in system memory. As a result, after I cycle through a few dozen, I get a 'nexus too small' error.

Calling ent_purge() before the ent_morph() doesn't seem to prevent this, (reading up on it, it just removes textures from video memory). Is there a way to remove the model from system memory?

Cheers,
Thomas

Wow. This is totally weird. I was just today having the exact same problem as a result of doing the exact same thing you are doing. In my case I was using ent_morph to toggle through sky models (and I also tried the ent_purge / ent_create method resulting in the "nexus too small" error. FYI: I changed the nexus value in WED and it didn't help.

Can anyone help us here??

I would say that's an engine bug! Post it under engine bug.
Meanwhile you could do an ent_remove, ent_create instead of the ent_morph (hope that that works and does not produce the same error...)

FYI:

I changed the nexus value in the engine command line using this syntax:
-NX 80
...and that did the trick. I'm now able to cycle through all 28 sky models I have, but it ends up taking up a large amount of virtual memory (which is what the command line above does - tells the engine to reserve 80 meg of virtual memory on the hard drive).

Does anyone know how to clear the virtual memory??

See JCL's comments here