In the 17.9 release, several files (icons in particular) have been moved.
For hosted customers, there is no impact. For on-premise installations, please read the following.
Apache users:
There is no impact for Apache users if they use the provided apache_neolane.conf.
IIS users:
For IIS users (on Windows), several icons will appear missing in the console after the build update. Additional IIS update steps are required: