Just upgraded the loader firmware (DSL-600A) on my Apex AD-600A player to LI-18 to gain support for DVD-R. Upgrade proceeded normally as described in the nerd-out documentation. After completing the firmware upgrade, the unit will now play DVD-R disks. The problem I am now having is that SVCD's created using DVD2SVCD and burned with Nero (using .cue) will no longer play.

The player loads the disk
After a short delay displays "SVCD - PBC ON"
Pressing the play button results in the hand being displayed
If stop is pressed twice, then play the screen displays "Invalid Entry"

Additional info:
SVCD's that I created from TMPGenc output (.mpg) burned using Nero's SVCD template still work. It is only the SVCD's produced by DVD2SVCD (and burned via Nero/cue) that are having problems.

Thank you in advance for any information you can provide.