In respond to your question i would like to inform you that Captivate 5 saves file in " cptx" format whereas Captivate 4 in " cpt".
So it is not possible to open Captivate 5 file in Captivate 4.
However, you can open Captivate 4 file in Captivate 5.
I'm sorry, but Captivate has never been backwards compatible. It is not possible to open a project of a later version in a previous version, not even to save a project to the format of a previous version. Captivate 5 has been built up from scratch and is really rather different, moreover it supports only Actionscript3.
This is nothing new: you couldn't open a CP4 project in CP3 neither.
That is your point of view, of course and understand the frustration but there must be a reason. Microsoft doesn't allow to have different versions on the same system, that is also quite a problem. Whereas I have for the moment on my laptop Captivate 4, 5, 5.5 and 6.0 installed and they work happily together. The difference between version 4 and 5 is pretty great, 5 was rewritten from scratch, only supports AS3 (CP4 supports both AS2 and AS3) , has a totally different Text engine etc...
Captivate 5 is useless for our needs now since it's not supporting AS2. We are unable to import and run in our Articulate Presenter 9 projects. What a waste, we really liked Captivate 4's ability to do this, and unfortunately our company migrated everone to a Win7 OS and will not allow us to use Captivate 4 .... Captivate will lose some customers. I hope they "fix" Captivate 5 and allow AS2 publishing... sucks.
Europe, Middle East and Africa