After doing some investigating, this seems to a problem with many iLok based plug-ins, that has come up in the past few days. Can you try the following steps and let me know if it solves your issue?
1) Deactivate all Eventide iLok licenses on your computer using the iLok License Manager.
2) Reescan for your plugins into your DAW.
3) The plugin will ask for activation (in the reescan process). Don't activate throught this window. Instead, go back to the iLok license Manager and activate the license there. The activation window in your DAW should go away
4) Repeat step 3 for all of your Eventide plug-ins having this issue.
Let me know if that helps solve your problem.