preStartUp ordering problem (8.6.3)

Hello,
I am currently unable to build a working XD image with 8.6.3 due to a preStartUp ordering problem.
OSStructures need to have their definitions regenerated during CorePI class>>#preStartUp, and they use the variables such as IsWinNT and isSunOS do decide which definition to initialize (see OSAddrInfo class>>#regenerateDefinition for an example).
In an XD image, by the time these methods are called, the variables are still nil, because they will be initialized in XPlatformExtensions class>>#preStartUp which comes later in the sequence.
To me it looks like this would make building working XD images basically impossible - is there some fix for this?
Of course I can implement a dirty hack by calling "XPlatformExtensions preStartUp" from CorePI class>>#preStartUp but I'd prefer an official solution :-)

Cheers,
Hans-Martin

(actually, I mixed up preStartUp with the initializeAfterLoad that is being called from xdImageInitialize, but basically the problem is the same)

Hello Hans-Martin,