AME export: crop effect generates red areas

Hi,

I'm experiencing a problem while exporting a footage from Premiere CC 2015 through AME CC 2015:

Dynamic crop effects applied in Premiere are being exported by AME as "red areas" (as you can see from the images).

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Source video file is QuickTime DNxHD 120mbps 25fr 8bit 1920x1080 4ch 48khz 24bit

Sequence settings: DNxHD 120mbps Multichannel

Export queued to AME with the following settings (format: QuickTime; Video Codec: Avid DNxHD Codec; Codec Settings: 1080i/50 DNxHD 120 8bit) generates the described red crop.

Export with Premiere (same settings) shows no error.

Export queued to AME with the option "Match sequence Setting" flagged shows no error (but then the export produces an MXF Stereo instead of the QuickTime Multichannel I need).

Rendering the sequence in Premiere before exporting or changing the Renderer in AME (OpenCL, CUDA, Mercury only) doesn't solve the problem.

This is occurring on different systems (iMac with OSx 10.9.5 16gb mem and a different Mac running 10.10.3 24gb mem)

Any ideas on what I might try to do?

Thanks!