Unity3d run on Linux show "There is no data folder "

Hi , I built the very easy game from Unity3d on a Mac as Linux x86_64 program , when I run the program , It says :

Set current directory to /home/public/Desktop

Found path: /home/public/Desktop/Untitled.x86_64

There is no data folder

what should I do , BTW , I add the execute permission on my program .

Ok , I found a folder called Untitled_Data folder with the Untitled.x86_64 program and I can run this program now . Problem solved.