Getting VRAD crashes whenever I compile, HDR or not. Deleting the entire boxy area seems to fix it, but I'd rather not trash the last few days of work. Anything I can do to try and salvage this? :s
(VMF uploaded to my webserver and will be taken down in a day or two)

www.elitetreacle.info/sp_coreciv_2.vmf

Hope someone can point me in a direction or two. I'm getting annoyed by Valve this weekend, I don't nee d another reason (they broke the Source SDK, stopping me from working on Destination Hostile >.>)

/me will has look. Don't guarantee an answer.

EDIT: What is with all the skips with no hint texture on any of the faces? They will do nothing when compiled.
EDIT2: There is no need to split every room up using linked_portal_doors. You can have the same effect using areaportals.

EDIT3: The solution is that light_spot inside your big box. Delete this light and it compiles right for me.

Thanks muchly! The reason for the Skips is me not having finished making the map yet, and I had started laying down these brushes for later. More just to make things easier for me in the long run.

The world portals do have a reason, by the way. The instance for the elevator is slightly too tall, and I kinda worked myself into a corner with the 2nd chamber, which is meant to be quite large, but i can't fit in the space i have left.

So weird that it was the spotlight causing it, as thats been there for ages and compiled fine before. Oh well :3 Thanks again!

EDIT: Still crashes.

/me sends edited .vmf and successfully compiled .bsp.zipple.zip