I seem to have this bug in Sonar Platinum that causes the program to crash (Windows reports this program has stopped working)
It only seems to happen if I have an existing MIDI track and want to record a 2nd comp track over it.  I will record the 2nd MIDI track in Comping Mode, and when I press stop, Sonar immediately crashes.   This has happened on various instruments, including Lounge Lizard, EZ Drummer, Kontakt 5....so far any virtual instrument.   I don't have any efx added anywhere in the project.
This is happening on a brand new computer (It didn't do this on my old computer) but everything is freshly installed, including the OS, which is Windows 10 Pro 64-bit.  I have more than enough computing power (see my specs below).  So I'm not sure what the problem is. 
Additional info:
If I delete the old MIDI track first and THEN record a new track, it will NOT crash.  It will only crash if there is an existing MIDI track and I do a Comping Record.  Also doing a Sound on Sound record will not make it crash either.
I am using the latest build of Sonar Platinum, the latest releases of all VST plugins, and all my drivers are up to date.
Thanks for any help or suggestions,
Lee
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CPU: Intel i7-5820K CPU @ 3.30GHz (6 Core)
MOTHERBOARD: ASRock X99 Extreme3, X99, 3way X-Fire & SLI, GB LAN, USB3.0
RAM: 32 GB DDR 4 SDRAM PC4-19207
C Drive: Samsung SSD 850 EVO 500 GB
D Drive: HDD Seagate 1TB
GRAPHICS CARD: AMD Radeon R9 270X
VIDEO MONITORS: 2 x ViewSonic VA2702W (27")
AUDIO: Focusrite Scarlett 2i2 (USB)
AUDIO MONITORS: M-Audio BX8
MIDI Keyboard: M-Audio Oxygen 88

This is fixed for the next update...

Noel Borthwick [Cakewalk]
This is fixed for the next update...

Ah! So it's a known bug?  Do you know what's causing it?  A Windows 10 thing?
Either way, I'm glad to hear it'll be fixed, so I won't have to reinstall everything again!
Thanks Noel!

This kind a happens to me as well. I use Phalanx from Vengeance sound & when I create a 16 track midi sequencer, it crashes on the second or third take. This is not happening when I insert a singel Phalanx track. Was after the latest update I guess.

In the mean time, I believe this only happens if you record with lanes showing. So just collapse lanes before recording.

Yeah, I didn't check Problem Reports Forum first,  I see now other people have this issue as well.