Two questions about the John theme

I am using the John theme for my personal website (http://bit.ly/1muIcqw).
After i set everything up i still have a few questions / problems:

1) Thumbnails are not showing. They give also the error:
''An error occured during creating the thumbnail.''

When you visit my website you see underneath ''projecten'' no thumbnail
and when you click on it you are not seeing the information screen like the demo page.

This problem also is in the weblog section when you scroll down. I think this is the same problem.

2) In the demo theme you see in the menu a blue button ''blog''. How can i fix this in my menu?

3) I see no footer. When i first installed the theme i saw a small footer with all rights served...
but now its gone. I not deleted the footer or something. How can i fix this?

Hello,

Regarding your problems,
1) Please check your wp-content/uploads/gk_nsp_cache directory permissions and content (are there thumbnails?)
2) You should add "button" css class to this menu item, which you want to be blue and aligned to the right.
3) I can't see the footer in the HTML structure, are you sure that you didn't do any changes connected with the footer? Could you send me a PM with the backend and FTP access

i send you a PM. When there is result i will post it here for another people