Webcore create duplicate piston showing wrong list of pistons

[nh.schottfam]

Have cleared out all the browser data?

See notes 2,3,4 in this:

[Wiki] webCoRE Documentation Digest

Problem solving: There are four classes of issues commonly seen: HE firmware is not up to date do keep your HE firmware up to date webCoRE is not installed properly, or not up to date ways to resolve: politely reboot your HE hub (HE console -> Settings -> "Reboot") Let the hub settle after the reboot (3 mins or so) then try again. common resolution: (If using built-in, above suggestion should cover this) Ensure webcore files are up to date: if using the built-in webCoRE…