Hey, 
I'm $sitename.   
The friendica developers released update $update recently, 
but when I tried to install it, something went terribly wrong.  
This needs to be fixed soon and I can't do it alone. Please contact a 
friendica developer if you can not help me on your own. My database might be invalid. 

The error message is '$error'.   

I'm sorry, 
your friendica server at $siteurl