I updated phabricator, libphutil, arcanist to the latest stable version. I followed all the upgrade instructions. When "arc diff"ing I get this error:
[HTTP/500] Internal Server Error
{"result":null,"error_code":"ERR-CONDUIT-CORE","error_info":"#1364: Field 'properties' doesn't have a default value"}
At first I turned off strict mode in MySQL then I decided to fix it by making the column nullable in the db:
ALTER TABLE differential_revision MODIFY COLUMN properties longtext NULL;
Not sure if this is a bug on my end or if reproducible elsewhere but it prevented me from being able to use arc diff. My environment is pretty standard (ubuntu 14.04, nginx + php-fpm).
Thanks,
Jason