Error code -50 mac user my book live duo

Dear All … im trying to get a solution for my problem long time now and i submitted a ticket to support two days ago 

when i try to move large folder to Mybook live duo it gives this error 

any help please ?

kind regards 

you can notice the difference between both operations 

Look at this thread, especially starting at #18. It seems that a misunderstanding between power saving settings may be at work.

http://forums.macrumors.com/showthread.php?t=1078212

i will try it when i go back home today 
i wish it will help 

Thanks for help 

Good Luck!

hello

thanks a lot WD support team , i had two calls from them and they tried to help me to fix the problem for about t hours online and on phone … but at the end still no fix because i have another problem with my Mac 
permissions issues i will try to fix this issue and i will let you know 

Thanks 

When I used Macs at work, Repair Permissions, in Disk Utility seemed to be an easy thing to run for an initial check for a variety of problems. I don’t think there is any risk in trying it.