[fprint] Enroll failed with error -22

[母子安]

hi
i just install libfprint and pam_fprint,but when i excute pam_fprint_enroll
--enroll-finger ,i got err like this:

This program will enroll your finger, unconditionally overwriting any
selected print that was enrolled
previously. If you want to continue, press
enter, otherwise hit Ctrl+C

Found device claimed by UPEK TouchStrip Sensor-Only driver
Opened device. It's now time to enroll your finger.

You will need to successfully scan your Right Index Finger 1 times to
complete the process.

Scan your finger now.
Enroll failed with error -22

this page also report a bug like
me(http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=585179),but the
reply said that it has been fixed by last version.
i just got the source by git,but i still got this err.

my pc is lenove x201,system is archlinux64 kernel2.6.35

best regards.
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