I have the CE version of 2.0.2 installed on Ubuntu Server 14.0.4 LTS and it's been working fine. Trying to upgrade to 2.0.4 and it fails the readiness check with:
Check Component Dependency
We found conflicting component dependencies. Hide detail
For additional assistance, see component dependency help .
The problem is, there are no details or further clues that I can find. Is there a log file somewhere that might give more detail than this? I have shell access to the server. Everything else passes.
Anyone have any ideas?
Following the upgrade guide elsewhere here, I was able to upgrade to 2.0.4 using the shell.
I used the following:
Hope this helps someone.
Also saw an upgrade guide somewhere here, with an additional command:
composer update magento/magento-composer-installer
composer require magento/product-community-edition 2.0.4 --no-update