Keyboard Trouble

[enkel]

So, I downloaded a keyboard font on my phone but it did not turn out too well. I deleted all the files from Cydia after I found out it wasn't working correctly and gave up. After respringing my phone I get these square like boxes with question marks in them on my spacebar, search/enter button and the abc one. Here's the image to show you what I am talking about.

Hopefully you guys can help me out; thanks in advance.