Hi Esteban
When exporting from Combustion 4.0 you have the option to export as a DPX frame sequence.
Hopefully this export option will be similar in Max.
Create a New framelink movie matching your projects settings, then move the exported DPX files into the Framelink network drive.
Unmount the framelink movie.
You should now have a playable uncompressed 10 bit avi file.
FYI Framelink is included in version 5.0 drivers and above. Recommend using Decklink 5.1.1
TGA file playback may be attributed to your disk configuration.
email pcsupport@blackmagic-design.com with your system configuration and I can review it.
Andrew McLeod
Blackmagic Design