I was searching for a problem I have with any objects from other planets (ex. DEA), as placing them in ZeroEditor, saving, then munging, would lead to a crash when played. Although I followed Fierfek's Modding guide, it had this problem. I later read this short post:

http://www.gametoast.com/forums/viewtop ... odf+world1
(sorry about the highlights)

As described by Taivyx, the hierarchy (folder arrangement) in the BF2_ModTools directory should be:
data_###/Worlds/@@@@ (MSH, ODF, world1 folders)
^Taivyx's post has been edited for accuracy -Staff

My mod's folder is different, the hierarchy is as follows:
data_###/Worlds/SC1/@@@@
and in "SC1" is:
-Effects
-MSH
-MUNGED
-ODF
-sky
-world1

Could this folder structure cause problems when having objects from other worlds added into the map?

No, your heirarchy is correct, I'm not sure what Taivyx meant there. Can you post an error log?

Ok, here's the error log. The added object is tan4_bldg_corridor.
Sorry it took so long, I had a problem with munging and had to reinstall BF2_ModTools.
I believe the Severity 3 message, regarding sides, has nothing to do with the objects problem (I had the severity 3 message before adding the tan4_bldg_corridor.)
Note: edited out redundant "redmemorypool" and "InVehicle" messages.

EDIT: I created another brand-new map and placed only objects from the Death Star in it. It crashed as well , here is the error log:
Similar messages have been removed. Only a small sample of each "type" of error message has been included (otherwise it's way too long). If you want the full thing, it's here:

Not that I'm saying I know what the problem is, but do you (anyone) think it could be:
1) a problem with the BF2 ModTools I downloaded (the setup exe)?
2) a problem with munging, ex. incorrect options selected?
3) a code issue?
or could it be something else? Please post soon.

FINAL EDIT: Problem solved, I neglected to use the base layer for non-CW Ships.
For all those people out there, when using objects from other worlds you must place them in the base layer.