Hi everyone.  I'm new here, so I apologise for my lack of knowledge, and any other bads I am going to commit trying this forum thingy!
 
I have been using Sonar x1 Producer happily for several years, and just last week it decides it won't export, import or open a project from the file menu.  I have to get Task Manager to shut it down.  I am in the middle of a project so I need a fix.  The project is very simple - 3 softsynth tracks successfully bounced down to 1 audio. The project still opens from the quickstart menu, and I can work in it still, just not export it.
My computer is Windows 7 64 bit.
I updated Java around the same time as this problem occurred, so have uninstalled that update but am still having the problem.
 
Is Sonar x1 just too old now?  Any suggestions to the cause of the problem?
 
How do I know if I upgrade Sonar that I won't have the same problem anyway to due a computer issue that I can't figure out, rather than anything else?  Because the demo doesn't export I can't tell!
 
I mostly use the True Pianos synth, which is only available on Platinum.  If I upgrade to Sonar Artist can I just load that synth from X1?
 
I appreciate any help and advice anyone can offer.  Thankyou :) 

Hi Midi and welcome to the forum.  I do recommend upgrading but X1 is not too old. It should work. When you say you can't export, would you give a clear step by step procedure you follow. Its possible one step is causing the trouble. Also what is the result? What happens?   

You could try a re-install Sometimes things just get screwed up and a reinstall fixes what got screwed up

Installed X1D?
https://www.cakewalk.com/Support/Knowledge-Base/2007013277/SONAR-X1d-Update
 
Just one project> What happens with new projects or other projects.
Have you tried freezing the synths, saving, then starting Sonar safe mode and then do an export?
https://www.cakewalk.com/Documentation?product=SONAR%20X3&language=3&help=Dialogs2.094.html
  
Tried temp disabling your virus scanner? have you run windows update recently (plz do so)?
Do you have enough disk space?
Try running chkdsk C: /R from an administrative command prompt.
 
What's the error message?
 
Some ideas anyway... thx.

Wow! Hello everyone and thankyou for your replies to date :)  So....
 
When I have bounced my mix to audio, I select the audio track, click File>Export>Audio and it's game over.  The menus grey out and I get no response from clicking on anything.  There is no message. Track Manager tells me the program is waiting on a response from me (as it would be had the dialogue box shown up).  I get this same problem with new tracks and th others I can load from the quickstart menu.  I can't load old ones from File>Open.
 
I have uninstalled and reinstalled several times, installed X1C and X1D, checked the location of all my folders, I tried running the program in safe mode but I don't think I did it properly because nothing seemed any different.
 
I have 248 GB free hard disk space and 6 GB Ram.
 
I'm not sure when I ran Windows updates.  I can check and do that.
 
Thanks again all :)

Be sure you don't have a hidden window dialog behind the main window. 

I never thought of that!  I have a look now!

Well well.  I previously couldn't check for a hiding dialogue box because the minimize button is also unresponsive - something I just remembered when I went to try it.  But this time upon export attempt I also got a windows Fatal error message, an error message from Cakewalk Problem Report somebody (which I have never seen before EVER!) and then windows telling me that Sonar has stopped working and that it will check for a problem.  None of these have ever appeared before.
 
The Fatal error message included the following Module: C:\Windows\SYSTEM32\ntdll.dll    and then something else with lots of zeros.
Does that give anyone any clues?
 

You may have to reinstall. In fact that is what I would do. 

Thanks John.  I have already done that several times.  I am thinking that I have some kind of computer problem rather than a Sonar problem.  There seems to be other stuff going on as well now.
 
Thanks for your help today :)