I have installed this theme 'template only' as I had to many problems with my permissions, errors etc. Now it works, but I'm missing the sample data of the theme. In the template manager I have enabled preview, but still does not show the sample data.
Do you have any other options which I missed?
Thank you.

Hello,

Sample data as our demo site just can show if you installed quickstart package.

Thanks

I solved it, thank you. I reinstalled the package and I had to adjust my .httaccess file so that the website was working on php 5.3 modus.
For anyone who had errors like Warning: file_put_contents ... file.php on line 418 ($ret = is_int(file_put_contents($file, $buffer)) ? true : false;) and a whole bunch of permissions on Unwritable:

I added in .httaccess :
<FilesMatch "\.php$">
AddHandler x-httpd-php53 .php
</FilesMatch>