2012-07-22 14:46 - edited 2012-07-22 14:47
Thanks for your post and welcome to the forum.
WhatsApp is not available for the C2-01 and from your post it seems you may be trying to install apps outside the Nokia Store. It is advised to use the Nokia Store to install apps as this way you will know f an app is actually available for and compatible with your device.
At this point it may be a good idea to do a fresh install of your C2-01 by doing a full reset and re-install of the system software.
Hope this helps,
Press the 'Accept As Solution' icon if I have solved your problem, click on the Star Icon below if my advice has helped you!