ID:1958055
 
Resolved
The throw statement was parsed incorrectly in several cases.
BYOND Version:509.1305
Operating System:Windows 7 Home Premium 64-bit
Web Browser:Chrome 47.0.2526.8
Applies to:Dream Maker
Status: Resolved (510.1337)

This issue has been resolved.
In the reference, it shows that you can do:

throw EXCEPTION(...)


but it seems to ONLY work with Exception or a new statement.

throw "thing"
throw thing //where thing is a reference to an object or string
throw null


all generate a compile-time error:

exception_test.dm:7:error: thrownull: expected 1 argument (found 0).

The only examples in the reference with throw do not use parenthesis, but it seems to be required.
Lummox JR resolved issue with message:
The throw statement was parsed incorrectly in several cases.