Thanks
WanderingPhilospher for the quick answer, i am sorry as i was away for few days.
Also many thanks for the explanation, you are very right Etar Kangaroo didn't even start and i was wondering why but as you explained the range was very small.
After using a bigger range (as you did) and i even used bigger range and found the key - perfect.
Then i started it with the #130 and the full range .. and after 24h there was 100GB of work file but nothing was found - as expected
Now i started it with the fractional but as you know it uses the JeanLucPons Kangaroo (which loses performance) but lets see how it goes.
Another issue with the tools is the good explanation of the parameters and the configuration also some more detailed information behind those to understand how and why to use them.
by the way, are you the developer of this
https://github.com/WanderingPhilosopher/VanBitCrackenRandom2 ... seems you are also very expert in that subject

Thanks
citb0in for your response and the info about the Kanga-256.
I wish to spend more time on this subject, but not easy.
I will update you about any progress
Regards
So an update, ... after running the fractional for 24h the speed of Kangaroo went from 1300 MK/s to 27 MK/s without a result.
Today i started your VBCr v2.00 on #66 which is running with the same speed around 1300 MK/s since free hours.