--- ehc_loop.c.old	2009-03-28 10:37:21.000000000 +0100
+++ ehc_loop.c	2009-04-12 02:08:25.000000000 +0200
@@ -247,7 +247,11 @@
                                         ums_mode = message->fd;
                                         //    if (verbose)
                                                 debug_printf("ehc:use disc %s\n",ioctlv_voidp(vec[0]));
-                                         d = wbfs_init_with_partition(ioctlv_voidp(vec[0]));
+                                        d = wbfs_init_with_partition(ioctlv_voidp(vec[0]));
+                                        if(!d)
+                                                result = -1;
+                                        else
+                                                result = 0;
                                         break;
                                 case USB_IOCTL_WBFS_READ_DISC:
                                         if (verbose)