Save as new template fails with "Invalid argument supplied for foreach()" error

I wanted to create a post template in Easyblog. Seemed pretty easy. Then when I want to save an exiting post : http://www.eglantineonline.com/administrator/index.php?option=com_easyblog&view=blogs

as a blog template, (by clicking on the arrow right to "save for later" and then clicking on "Save as new template") "Template Anne"

I got the following message :

Warning: Invalid argument supplied for foreach() in /home/annham38/www/annham38.myhostpoint.ch/eglantine3/administrator/components/com_easyblog/includes/document/document.php on line 600


When I open the template again the same error message shows
Why is this? Can I use the template or is it broken now?