If you use the official 0.8-Release-Build, this is normal... There is a bug, which is fixed in newer Betas/REVs.
You need to have a ul.cfg in your share (even if you are using ISOs), but it could be a renamed&empty text-file for example...
So either just put an empty ul.cfg, or compile a newer REV/Beta.
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