(I assume, you tried an ESR-Disc,...)
...and another user, which used the wrong ESR-Version...
(...same question every day for multiple times...)
As far as I remember correctly, this is stated in ESRs Readme.
Use the DVDV-Direct-Version of ESR, place it to the ESR-Folder and you´re fine.
Btw.: ule has nothing to do with it (starting games). ESR-MC-Version, just starts "BOOT.ELF" (in your case ule) and give it access to a patched DVDV/ESR-Disc.
Does it even show the ESR-Logo, before it starts ule?
You can also use your current config and start ESR-Disc through ule.
Use the "PS2-Disc"-Command in MISC.
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