[LAU] Weird RME HDSP Error

Hi, I am getting this in dmesg when I connect my HDSP Multiface via an Expresscard to a Debian testing system which is known to operate these cards: [251636.327240] pci 0000:05:00.0: [10ee:3fc5] type 00 class 0x040100 [251636.327280] pci 0000:05:00.0: reg 0x10: [mem 0x00000000-0x0000ffff] [251636.327491] pci 0000:05:00.0: supports D1 D2 [251636.327496] pci 0000:05:00.0: PME# supported from D0 D1 D2 D3hot [251636.335144] pci 0000:05:00.0: BAR 0: assigned [mem 0xf0000000-0xf000ffff] [251636.335176] pci 0000:05:00.0: no hotplug settings from platform [251636.335274] cannot find the slot for index 1 (range 0-29), error: -16 [251636.335283] snd_hdsp: probe of 0000:05:00.0 failed with error -16 and the red LED on the Audio interface (which indicates an error) stays lit. Re-plugging things doesn't help-can anyone make any sense out of these errors, or has this at least been seen before? thanks for all ideas! Peter