Hello kyraia

I see you say it is Blender 2.70 on Windows 7 are you on a PC or laptop? I know that may not make sense but sometimes with Laptops you need to make a few tweaks with in the User Prefrences to get Blender to behave as if on a PC. Second did you download from Blender.org or graphicall.org reason I ask most of the Blender releases on graphicall.org are builds that have sometimes extra options that are still in a sort of beta that are not full release canidates. Did you try redowloading the latest release again from Blender.org and uninstalling the one you have currently and reinstalling a fresh copy it does happen sometimes that Blender can become corruptand needs to be reinstalled. You can also check for potential errors in the System Console which you can make visible by going to Window(along the top menu) >Toggle System Console and it will bring up what looks like a command prompt window that will list if there are any error that Blender might be experincing. If there are errors we might find those useful to try and further help you with your issue.

Lobo3433

Blender Maya & 3D Forum Moderator 

Renderosity Store

My Free Stuff

Facebook

Twitter

Renderosity Blender 3D Facebook Page