All of a sudden one of my projects is crashing when I try to save (or auto save tries).  Been recording this tune for a while w no issues.  Have not added any new instruments or effects.  Have not changed any settings.  Maximized everything, turned off background processes.  Have memory to spare.  Can't figure out what's going on.  Appreciate some advice.
Sonar X2
Win 7

There has to be more information about the nature of the "crash." Usually there is an error message displayed or a Windows Event log entry.

Just hangs, no error message from Sonar.  Windows error message just says "Sonar stopped working".

Updated OS?  Security patches? New Items added?
 
Essentially, what has changed from the it works now, to now it doesn't?
 
Pretty sure, something has.  It's the most logical explanation.
 
Just my two cent.  Your mileage may vary.
 

Make sure the X2a path is applied.

Is it possible you do not have either Windows Update maintenance up to current levels for Windows 7, and/or perhaps Sonar X2 is not running at its most current level?  (I think scook pegged that as X2a - I don't know if there was ever an X2b maintenance release and I am cooking so I am skipping looking that up so I don't burn the sauteing mushrooms, mmmmm, and sorry)
 
And even though the Windows message said Sonar stopped working, perhaps if you go in and view the Windows Event Viewer data. that maybe there is/are error message(s) to help shed light on something detected at the Windows level - even if it shows a Sonar issue.
 
Bob Bone
 

thanks bone.  Here's what I found in the event logs relating to Sonar when it crashed - 2 events below, not sure how to interpret it tho ?
-------------------
The program SONARPDR.exe version 19.0.0.306 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Action Center control panel.
Process ID: 74c
Start Time: 01d197755600d5f8
Termination Time: 34
Application Path: C:\Program Files\Cakewalk\SONAR X2 Producer\SONARPDR.exe
Report Id: c7876422-0368-11e6-a27f-1078d2e80996
-----------------
Faulting application name: SONARPDR.exe, version: 19.0.0.306, time stamp: 0x5050f966
Faulting module name: SONARPDR.exe, version: 19.0.0.306, time stamp: 0x5050f966
Exception code: 0xc0000005
Fault offset: 0x00000000000eea36
Faulting process id: 0x1bec
Faulting application start time: 0x01d1977592b56201
Faulting application path: C:\Program Files\Cakewalk\SONAR X2 Producer\SONARPDR.exe
Faulting module path: C:\Program Files\Cakewalk\SONAR X2 Producer\SONARPDR.exe
Report Id: ed2254c5-0368-11e6-a27f-1078d2e80996

Before going any further, I would apply the X2a patch http://www.cakewalk.com/S...13301/SONAR-X2a-Update