You could always submit the project to CW to see if they can find the issue.    And like Keni said, import the data into a new project to continue working.

Try opening that project in safe mode. If it opens, try to export all your audio.

If it opens, see if the zoom work like that.

Let us know what happens.

Hi everyone! Sorry for the delay!
 
I can resolve it (for the time being)... Yeah it was clear that the problem was in that project.
 
Reconstruct all the project and import all audio was my last choice.
(Reconstruct measure structure, tempo map, markers, import)
 
It seems that the issue was caused by 2 tracks that has several takes inside.
(Not too much, ie 4 takes in each). I cleaned up the takes that I was sure that I will not use.
 
Then I ended with 2 tracks that has only 1 take inside.
Save with another name. Exit.
Restart... And Magik! No more zoom issues...
 
Its seems that something with the take lanes was
causing it! I dont know if this is an issue only in my computer
or if its something like a bug. IMHO it looks like a bug.
 
Resume If something like this happen re-order and clean
up a bit of unwanted takes. Make new channels, put some
takes into new channels, save with another name and see
what happens!
 
Thanks for your help!
I hope that someone with this problem could find help here!
 
 

You should submit a problem report to Cakewalk and upload the broken version of the project so they can figure it out and fix it:
 
http://www.cakewalk.com/support/contact/problemreport.aspx