I am trying to install the demo version of this script on my iMac (Mac OS X El Capitan 10.11.6 - InDesign CC 2017) but facing some problems as shown by the screen captures attached.
I just double-clicked on this file « ObjectStatesAssistant.zxp ».
I get the following message from Anastasiy's Extension Manager: There is already an extension installed with that name. Please uninstall it first and try again.
I have no idea how to uninstall it. Moreover, it is not shown in the InDesign Extension list.
I must mentioned that another script from Automatization « MultiFindChange3.zxp » was installed with no problems.
Many thanks in advance.
AFAIK, Martinho has not updated that extension for CC2017.
Quick update for you. I'm told, that barring any unforeseen issues, Object States Assistant should be updated for CC2017 soon.