enabling modules gives blank page

Hi,
I have a rather strange issue: I'm using easyblog with several categories. Each category has it's own modules for latest blogs and an archive.
When I enable the latest blog module, I get a blank page. I rad about haing to update the modules, but how can I do that without having to do all the settings again? And the strange thing is: it works okay online but I restored a backup on my local server (MAMP) and there I get the problem of the blank page. I also had to recreate the links to the several categories. I'll attach the url, but there it's fine. It's local where I have the problem.
I hope you can help me some way!
Ineke

Update: I downloaded the newest version of the module and tried for one of the categories, but the same problem arises. So the update did't help.