Hi,
In Confluence 5.8.5 I created a custom syntax highlighting brush for , pretty simple but it helped us.
I've recently moved server (database dump, archive the data folder) and upgraded to Confluence 5.9.3 and it's no longer so helpful.
image2016-1-12 16:25:48.png
I've confirmed the Code Macro plugin (now at version 2.2.1) is enabled and the custom code macro is installed too. There aren't any errors in the atlassian-confluence.log.
I've uninstalled the specflow add-on and re-added it without issue.
Halp!