I think, you used the wrong ESR-Version (MC-Version, which starts "mc?:/BOOT/BOOT.ELF", instead of the game).
Try ESR DVD(v)-Direct (normal not "off"-Version).
"failed to load launchelf.cnf" is because of you didn't configured ule yet (which is normally "BOOT.ELF" in the given path).
But you don't need to, for what you want to do.
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux