[fprint] cannot make imaging example work

[xantares 09]

Hi,

I cannot make the img_capture.c example work.
I'm using an UPEK EikonTouch 300 on linux with latest libfprint 0.5.1, while other enroll/verify examples do work.

The UPEK EikonTouch 300 is claimed to support imaging:
http://www.freedesktop.org/wiki/Software/fprint/libfprint/upektc/

it fails with the following ouput:
Found device claimed by UPEK TouchChip/Eikon Touch 300 driver
Opened device. It's now time to scan your finger.

image capture failed, code -95


Where can I find documentation about this error code ? 
Grepping headers returns nothing, I only found this bug:
https://bugs.freedesktop.org/show_bug.cgi?id=60445

Any hints ?

Regards,
xan.

 		 	   		  
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