Comment on Torque Analog Clock by torque89
here, try looking here: [link] 
Or the problem might be you cannot change the filetype because you cannot see the whole filename. To do this, you must show the file extensions, i found a link for you to do that too. [link]
![[link]](https://www.deviantart.com/users/outgoing?http://img593.imageshack.us/img593/9288/screenshot061.png){kind=link}
ok finally its works,thanks a lot for your help 
,change the format 
,change the format yep, no problem. Glad it worked! 