Reinstalling PT 9 can I open sessions I created with PT 10?
 

Can PT9 open PTX? I didn't use clip gain.

PT10 is crap when it comes to big midi sessions. My PT9 template with lots of orchestral tracks work fine, and now PT10 it runs so slow. Every time I record or change the tempo I have to wait forever.

Re: Reinstalling PT 9 can I open sessions I created with PT 10?
 

As Dism replied to your duplicate post, you need to save(in PT 10) in the older file format(ptf). You can try changing the file extension from ptx to ptf and see what happens(I don't have 10 installed yet so I have yet to try any of this).