The problem is a bug I have?

Hello...
time to take the average Ai (version and now we installed the new version 9 see changed interface ( looks great by the way) ago
I have no problems of how to access or get to the functions , everything works as before , except for the page performance.
and that is that when I try to drag clips into the middle set, there is no way to do it.

eh I tried several things and I can not get it .
I wonder if they changed the charging method or a bug.

Ai media currently runs on a server built by us ( x2 E5-2620v2 @ 2.10ghz xeon , 32gb ram ddr3 , 2 ​​gpus gforce GTX980 , revo drive 350) Operating System Windows 8.1 Pro
With dongle to miami

I have read the manual several times and find nothing about this.

Help and thanks .

hello,

have you put the User Account Control settings to minimum?