Site crash publishing NPGK4

Hi all.
I'm actually using News Show GK3, but I'm working to change my template and upgrade all my modules to News Pro GK4.

The problem is that when I publish the module my website became a white page....

Here my web: www.cantiere.org
Here the page with the module: www.cantiere.org/template.html

Any idea?

I tried to install the module and to use it on others websites on the same server and all works fine.
I tried to disinstall all the old tools from gavick but I still have the same problem.
It generate a page with no code for my frontpage.....

Uninstalling all the modules and components from Gavik I have this error:

Warning: NSP_GK4_Layout_Parts::require_once(.../components/com_jcomments/helpers/content.php) [nsp-gk4-layout-parts.require-once]: failed to open stream: No such file or directory in .../modules/mod_news_pro_gk4/tmpl/layout.parts.php on line 138

Fatal error: NSP_GK4_Layout_Parts::require_once() [function.require]: Failed opening required '.../components/com_jcomments/helpers/content.php' (include_path='.:/usr/share/php:/usr/share/pear') in .../modules/mod_news_pro_gk4/tmpl/layout.parts.php on line 138

Then uninstalling Jcomments it works...

I tried to do this on a test-copy of my website, the question is: how to do it on my production site without crashing and uninstalling?

Still here...

changed teplate, but same problem....

Hi

Can I please see Your site.