Fails to connect

[irismessage]

Getting an error like this:

$ sudo xfer9860 -i
--- xfer9860 v0.2.2  Copyright (C) 2007-2014 Andreas Bertheussen, Manuel Naranjo and Bruno L. Alata..
libusb: error [usbi_get_context] API misuse! Using non-default context as implicit default.
[>] Setting up USB connection.. Device found, use? (y/n)
y

ERR: fx_initDevice(), 1'st control: -4 

[E] Error initializing device.
Connected!
[>] Verifying device.. ERR: WriteUSB: Could not write: -4
ERR: ReadUSB(): Could not read: -4
Done!
[I] Main memory:ERR: WriteUSB: Could not write: -4
ERR: ReadUSB(): Could not read: -4
ERR: fx_getMCShCapacity: no proper response
[E] Error requesting MCS capacity information.

on x86_64 system with libusb-1.0.26-2 from arch

I have the calculator in receive mode, and when I run this the calculator shows "Receive ERROR" presse xit