When attempting to make use of the Diagramly plugin for Confluence 5.5, I create and save a new page with the plugin initialized and then when clicking "Start editing the Diagramly diagram", I am taken to a blank page with no other actions possible.
I normally use Chrome, but have reproduced this using IE as well. Any suggestions?
draw.io 2.6.2 somewhat pre-dates Confluence 5.5, so it won't support it. You can see which Confluence versions are supported at https://marketplace.atlassian.com/plugins/com.mxgraph.confluence.plugins.diagramly/versions.