Crash when trying to re-run LinuxCNC

I installed LinuxCNC from the latest LiveCD

I WORKES FINE BUT... WHEN I CLOSE THE PROCESS AND TRY TO RE-START---> CRASH
i used the wizard to setup all the pins and motor values and MANUALLY edited & added the neccesary files to do screw compensation which works great.

I have to re-boot for it to start again.
Any idea why ?

This is the output of the 'crash' windows



Print file information:
RUN_IN_PLACE=no
LINUXCNC_DIR=
LINUXCNC_BIN_DIR=/usr/bin
LINUXCNC_TCL_DIR=/usr/lib/tcltk/linuxcnc
LINUXCNC_SCRIPT_DIR=
LINUXCNC_RTLIB_DIR=/usr/realtime-2.6.32-122-rtai/modules/linuxcnc
LINUXCNC_CONFIG_DIR=
LINUXCNC_LANG_DIR=/usr/share/linuxcnc/tcl/msgs
INIVAR=inivar
HALCMD=halcmd
LINUXCNC_EMCSH=/usr/bin/wish8.5
LINUXCNC - 2.5.0
Machine configuration directory is '/home/gytis/linuxcnc/configs/big_macine'
Machine configuration file is 'big_macine.ini'
INIFILE=/home/gytis/linuxcnc/configs/big_macine/big_macine.ini
PARAMETER_FILE=linuxcnc.var
TASK=milltask
HALUI=
DISPLAY=axis
Starting LinuxCNC...
Starting LinuxCNC server program: linuxcncsvr
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting LinuxCNC IO program: io
Shutting down and cleaning up LinuxCNC...
Killing task linuxcncsvr, PID=1624
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments
Cleanup done

Debug file information:
Can not find -sec MOT -var MOT -num 1
Can not find -sec IO -var IO -num 1
Can not find -sec LINUXCNC -var NML_FILE -num 1
Can not find -sec EMC -var NML_FILE -num 1
insmod: error inserting '/usr/realtime-2.6.32-122-rtai/modules/linuxcnc/hal_parport.ko': -1 Resource temporarily unavailable
big_macine.hal:7: exit value: 1
big_macine.hal:7: insmod failed, returned -1
See the output of 'dmesg' for more information.
1624
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

Kernel message information:
[ 1345.689146] I-pipe: Domain RTAI registered.
[ 1345.689157] RTAI[hal]: <3.8.1> mounted over IPIPE-NOTHREADS 2.6-03.
[ 1345.689160] RTAI[hal]: compiled with gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) .
[ 1345.689168] RTAI[hal]: mounted (IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs DISPATCHED), ISOL_CPUS_MASK: 0).
[ 1345.689171] PIPELINE layers:
[ 1345.689176] f8bd1e20 9ac15d93 RTAI 200
[ 1345.689179] c085cb20 0 Linux 100
[ 1345.720973] RTAI[malloc]: global heap size = 2097152 bytes, <BSD>.
[ 1345.721116] RTAI[sched]: IMMEDIATE, MP, USER/KERNEL SPACE: <with RTAI OWN KTASKs>, kstacks pool size = 524288 bytes.
[ 1345.721123] RTAI[sched]: hard timer type/freq = APIC/12468720(Hz); default timing: periodic; linear timed lists.
[ 1345.721128] RTAI[sched]: Linux timer freq = 250 (Hz), TimeBase freq = 2792959000 hz.
[ 1345.721132] RTAI[sched]: timer setup = 999 ns, resched latency = 2944 ns.
[ 1345.721249] RTAI[usi]: enabled.
[ 1345.818055] RTAI[math]: loaded.
[ 1345.910012] config string '0x378 out '
[ 1345.910033] PARPORT: ERROR: port parport0 claim failed
[ 1346.341077] RTAI[math]: unloaded.
[ 1346.404802] SCHED releases registered named ALIEN RTGLBH
[ 1346.420322] RTAI[malloc]: unloaded.
[ 1346.520024] RTAI[sched]: unloaded (forced hard/soft/hard transitions: traps 0, syscalls 0).
[ 1346.524650] I-pipe: Domain RTAI unregistered.
[ 1346.524663] RTAI[hal]: unmounted.

Hi

The answer is because hal_parport could not be loaded

insmod: error inserting '/usr/realtime-2.6.32-122-rtai/modules/linuxcnc/hal_parport.ko': -1 Resource temporarily unavailable

[ 1345.910012] config string '0x378 out '
[ 1345.910033] PARPORT: ERROR: port parport0 claim failed

This is probably because either it did not unload ( but that should give a different error message) or because something else has claimed the parport and it cannot attach.

When it fails to start , do lsmod in a terminal and look for lp, ppdev and parport_pc in the print out.
lsmod > lsmod.txt will save it as a file, please attach it on your next post.

Check /etc/modules does not have the line
lp
in it
Also that /etc/modprobe.d/linuxcnc.conf has the line
install parport_pc /bin/true
uncommented

These prevent the other normal printer modules from claiming the parport.
(you need to use sudo gedit in a terminal to get root access to edit them)

I am not clear why it starts the first time however.

regards

commenting out the LP entry did the trick.

In future releases, it may be worth while to get the liveCD to come up in that state without the comment.

Thanks !!!

-D