Transform tool for animation doesn't work..

I have a trail version on my PC(W7) and I can’t use the transform tool for animation. Once I put the mouse on selected object it automatically became deselected again and again…I can move the object only using my keyboards. It seems like something wrong with my preferences.

Thank you!

Sounds like you don’t have a supported graphics card. What is the graphics card on your computer?

You can also try turning off the Windows 7 Aero theme by right-clicking on the desktop and selecting Personalize. Then switch from Aero to Basic.

Make sure that you’re using an ATI or NVidia graphics card as per the system requirements and that you’ve updated to the latest drivers for your card.