Diptrace order option won't allow 6 layers

Diptrace has an option to upload design and place orders at Aisler within the software which works well for the 4-layer designs I have done so far.
However when trying to use a 6-layer design it tells me it’s not supported by manufacturer.
Attached is a screenshot of error message.

I will forward the Info to Diptrace so it gets updated. For the Moment you could export a Gerber or ODB++ and upload to our website.