Interior lighting

[GB1]

Hi

i'm having a major problem with interior lighting in V-ray.. everything comes out very dark,
and perfectly white walls turn out green.. why??--> GI is turned on!

also, why is the image rendered with V-ray 10x smaller compared to the full screen-scene i'd like to see?

can anyone help me on this one?
check attachments and you'll see what i mean!

Grtz

GB1

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