Jeroen
It appears you were right about my laptop being on battery power,that was the cause of the immediate finish result.
i tested two laptops on/off battery power .
on battery power  ,i got the immediate finish result,and on ac power,it worked fine.
thank you for your help.
regards
Steven
western australia.

Jeroen
here is the debuglog.

Version: MyDefrag v4.0
Date: 2009/07/21 08:12:57
Windows version: v6.0 build 6002 S
Commandline: "C:\Program Files\MyDefrag v4.0\MyDefrag.exe" -r FastOptimize.MyD
Working Directory: C:\Program Files\MyDefrag v4.0
---> See the 'Debug' setting or the '-d' commandline option to control the level of information in this file.
08:12:57 Analyzing the commandline.
08:12:57   Commandline argument '-r' accepted, added 'FastOptimize.MyD' to the scripts.
08:12:57 Running script: Language.MyD
08:12:57 Running script: FastOptimize.MyD
08:12:57 Running script: Settings

that's all.

regards
steven

hello again.
when i click on the different choices i.e. fast update,fast optimize etc.
the program opens,but keeps showing finished,straight away.
it won't run.
it did this when i first installed mydefrag 4,but later it ran ok.
now it's doing it again.
any ideas?
it is on a vista os,but i also had the same problem with an xp pro sp3 os.
thank you
regards
steven

Jeroen
thank you for your reply.
o.k,i will use your idea,and hopefully someone will create a gui for mydefrag v4.
your programs are excellent.
regards
Steven
western australia.

Hello.
with the 3 version of jkdefrag i could access a drop down menu and choose to defrag all my hdds,or choose an individual drive or external drive,flash drive etc.
how can i do this with mydefrag v4?
thank you
regards
Steven