TSOP4838 on GPIO with Harmony One

[Scool]

hello, i have 2 Rpi, one with Raspbmc and wanted to install Xbian on the second, i use on the first a TSOP4838 on Gpio pins with my Harmony One config as a Mce remote. on the Raspbmc, i simply choose MCE remote in the remote config and all is working well, i installed Xbian and found no way to make my remote working.. i did some look at the forum but found nothing about Gpio.. when i lauch mode2 in shh, i have errors messages :
mode2 : could not get file ...
mode2 : default_init() : no such ..

in a thread i read this mean the remote is not working ..

someone can tell me a way to make this working ? as on Raspbmc it's working out of the box, it's strange it's not working on Xbian.

best regards
chris