Blank page on multi-domain blog

Hi,

Las week I purchased the multi domain plugin, I tested it locally and it works perfectly, but when I installed it in my hosting (a dedicated virtual server on Media Temple) I get a blank page in the blog, no source code or apache error message. However, the administration works perfectly:

The multiblog install is at http://blogsmd.bluekea.com

My test blog is at http://blog.jesusrodriguez.eu. That is a blank page, but: http://blog.jesusrodriguez.eu/wp-admin works ok.

I have many domains hosted here, and I'd like to make wordpress work giving each domain a subdomain with its blog (blog.domain1.com, blog.domain2.com...) or, even better if that's possible, using subfolders such as domain1.com/blog but keeping the rest of the domain folders untouched. For the test domain (jesusrodriguez.eu) I created the subdomain in plesk and then edited the vhost.conf file to "point" to the wordpress multisite installation folder.

Thanks a lot for your help,

Jesus Rodriguez