Hi.
We had trouble with changeip.com. I saw, my script, which worked perfectly until now, aborts halfway to heaven. 
The offending line:
:do { :put [ /tool dns-update address=1.2.3.4 name=xxx.changeip.net key-name=name key=key ] } on-error={ :put "error happened" };
I’ve got a “connect error” error, instead of “error happened”, and script aborting ! Why ?
Best regards: CsXen
http://forum.mikrotik.com/t/changeip-com/104259/1