Facebook auth unable to connect

Hi,


I'm struggling here. Basically I'm trying to setup the Facebook 
integration but I'm hitting errors all around.


The first issue is that I get a cross-domain check error: Possible 
cross-site request forgery (CSRF, or "sea surfing") detected. Operation 
blocked. This occurs after hitting the Login with FB option.


Then after that the second issue is that there is no communication with 
Facebookgraph.


I'm on Tiki version 19.0 and the FB application is working fine with 
other web based software so I know it's not an app issue.


I tried posting to the forum but unfortunately no responses and I'm 
really stuck without this feature as my project depends on it.


Any help or advice would be highly appreciated.


Many thanks.


Kaya