I have been getting "General Error" (very helpful) a lot lately when saving and it's making me very nervous. 
I have got used to saving my work a lot after Melodyne was causing crashes so I have stopped using it.
 
However, I still save quite regularly but when this happens I effectively lose everything from the previous time I saved my work.
I then have to exit without saving, reload Sonar and then reload the last save and redo the lost work.
 
Is anyone else seeing this? 
I am on the second update of SONAR 2016.9.
 
Thanks
ZT

Hi. Maybe try to install the latest early access release?
http://forum.cakewalk.com/The-Early-Access-Program-is-Now-Live-for-the-Upcoming-Release-of-SONAR-201610-m3501363.aspx
If that does not work, come back and let us know what your project consists of (Audio, Vst, plugins etc.).
All the best.

I used to get this now and again, but as far as I can tell, it did not have any adverse effect on any of my projects.
 
I think it's safe to ignore it.

I have seen this. My work around is to press 'play' for the project.
After a few seconds of audio I stop and then save without seeing the 'general error' message.
I suspicion playing the project resets something....but have no clue what.

Thanks klos, I will give that a try when it happens.

Bristol, yes safe to ignore but I am still losing work (unless klos's workaround does the trick).

Zarqq, I will try the latest update and come back here if it's no better. I was using quite a few plugins so maybe related to one of them.

Thanks for the help,
ZT

I get this now and then. I have found that if you wait for a while (say 5-10 minutes), it'll let you save without the error.

I run into this quite frequently too. I agree with the "hitting play" thing mentioned above. It does seem to work. Also, make sure you just let things settle a minute or so before saving. Like if you do any major editing or bouncing, etc. Sometimes I catch myself hitting save right after I make some sort of adjustment. I think Sonar is still processing the edit or whatever, and it can't handle saving at the same time.
 
I've also noticed I have this problem while closing a project. But if I wait a minute or two before closing (and hit play/stop), it seems to close ok. Fortunately when this happens during closing, I don't lose any work because I've saved prior.
 
I've also learned to let my computer sit for a couple minutes after booting before opening a project. Turn it on, go grab a beer or something, then come back 10 minutes later when the computer is fully booted and ready to go. Starting early always caused me problems.
 
~Jeff

Thanks for your help guys, hitting play seems to be the answer!
 
 

I get it very rarely, but have yet to figure out what causes it. It used to freak me out ("Oh no!! A General Error!!) until I found that hitting Play de-fanged it. 

I have seen this occasionally of late as well. Apart from making me a little nervous it doesn't seem to affect the project though - I just resave.