I’ve found a few bugs in Instapaper Beyond since releasing the Safari extension this morning. I’ve updated the extension to version 1.8.3, but I’m not convinced that my update manifest (the automatic update) is working yet. If you’re running into issues (the biggest offender being an error when closing the help menu), try downloading the latest version and installing it over the existing version.
You can download the current version here, and see the list of links in the series box to the right for further info and backstory on Instapaper Beyond.