Verify pic12f629 using TE-20X

Binary package hint: picprog

Hi.

Trying to write a program in a pic12f629 results in the following:

soulnet@alderahan:/tmp$ picprog -i test.hex -p /dev/ttyS0 --erase --burn
Picprog version 1.8.3, Copyright © 2006 Jaakko Hyvätti <email address hidden>
Picprog comes with ABSOLUTELY NO WARRANTY; for details
type `picprog --warranty'. This is free software,
and you are welcome to redistribute it under certain conditions;
type `picprog --copying' for details.

/dev/ttyS0: id 0x0f90: detected pic12f629 version 0x10
Device pic12f629, program memory: 1024, data memory: 128.
Calibration word at 0x03ff preserved as 0x3454
Calibration bits 0x3000 in configuration word preserved as 0x3000
Erased and removed code protection.
Burning program memory,/dev/ttyS0:0000: programmed=2829, read=3fff:unable to verify pic while programming.
Is code protection enabled, or does the chip need to be
erased completely before programming?
Use --erase option to disable code protection.

As I've used the "--erase" option, I can't figure out where's the problem. The device is detected correctly
Tried "icprog" with wine and the PIC gets programmed and verified ok, so it's not a faulty programmer or chip.
I'd really love to use picprog instead of icprog through wine, so I can make any tests you suggest.

Thanks in advance.