[Tinyos-help] Can not reprogram

[Shi Yuan]

How to solve this error? I examined no other program is using this com port.

=====================
/opt/tinyos-1.x/tools/make/msp/set-mote-id --objcopy msp430-objcopy
--objdump ms
p430-objdump --target ihex build/telosb/main.ihex
build/telosb/main.ihex.out-1 1

    installing telosb bootloader using bsl
tos-bsl --telosb -c 8 -r -e -I -p
C:/PROGRA~1/UCB/cygwin/opt/tinyos-1.x/tos/lib/
Deluge/TOSBoot/build/telosb/main.ihex
MSP430 Bootstrap Loader Version: 1.39-telos-8

An error occoured:
(995, 'SetupComm', 'The I/O operation has been aborted because of either a
threa
d exit or an application request.')
Exception pywintypes.error: (995, 'EscapeCommFunction', 'The I/O operation
has b
een aborted because of either a thread exit or an application request.') in
<bou
nd method Serial.__del__ of <serial.serialwin32.Serial instance at
0x00BC23F0>>
ignored
make: *** [program_bl] Error 1