After burning 2 DVD's with Architect 3, tried to playback at my DVD player and some parts of them weren't playing back (they forced the player to crash)...after those two DVD's every disk i try to make Architect gives me this message "media maybe corrupted or dirty"
The "details" window reads the following:

'SFMMCX'-(17)
'USB/1394 Devices'-(3)
-'SONY DVD RW DRU-510A 1.0d'-(0)
Module sfmmcx.cpp Line 1795
A medium error occurred.
A seek operation did not complete.

Status: 00020202
Command: 2a 00 00 00 08 c0 00 00 20 00
Sense: 03 02 00
Info: 00 00 00 00
Specific: 00 00 00
Extra: 00 00 00 00 00 00 00 00 00 00 00

I use new maxell disks with SONY DRX-510UL, any ideas?