i installed indesign 2015 cc plugins from extension manager. the extensions created in : C:\Program Files (x86)\Common Files\Adobe\CEPServiceManager4\extensions
but the indesign cc 2015 are read extensions from: C:\Program Files (x86)\Common Files\Adobe\CEP\extensions
this mean that extension manager write plugins to a folder and indesign cc 2015 read from another one. this mean that indesign cc 2015 can't open these plugins. how to solve that ?
Please don't use extension manager for CC 2015 installations. It has since been deprecated. The CC app will install your add-ons.