Very Necessary , please help

hi ,

i have My Passport hardisk , when i want to install the WD Apps setup , i can not find the NEXT icon !! 

only the cancel icon is there , what’s the problem and what to do ?!

ن.PNG

what operating system?

Update adobe flash player ,java and microsoft .net framework.

adobe - http://www.adobe.com/support/flashplayer/downloads.html

java -  http://www.java.com/en/download/index.jsp

ms .net framework - http://support.microsoft.com/kb/2468871