I am unable to open any of my existing indesign projects after downloading my original version of Indesign 5.
It gives the message of missing plug-in's and says to upgrade to the latest version of adobe InDesign.
How do i do this?
These are the missing plugins's
generic page item.IndesignPlugin
It sounds like ytou saved all those projects in CS5.5. Those files are not backward compatible -- you need to export to .idml from 5.5 be able to open in CS5 (and there are still some potential Gotchas).