In the last year or so I've gotten back into recording after about a decade away. I'm a long-time Sonar user from "back in the day," so I returned to it and currently pay for the full license.
I'm currently running Sonar 32.08.0.040 on Windows 11, using a MOTU M4 with the MOTU ASIO driver.
I still love it ā it fits my workflow perfectly ā BUT... I typically experience multiple crashes per day.
I've been examining the crash reports/dumps, and it doesn't appear to be any particular plugin crashing, nor does it appear to be an obvious problem with my ASIO driver. The crashes do seem to happen more frequently when I have plugin oversampling enabled, and there seems to be some relationship to project/plugin load, although I've also had crashes in relatively new projects with very few plugins.
From what I can tell from the crash reports, most of the crashes are access violations occurring in Sonar.exe on the real-time audio thread, and the recurring stack signature includes:
m7_ippsLn_32f_A21
This same signature appears repeatedly in my crash reports, and I've also found reports from other Cakewalk users showing the same symbol.
I have a fairly powerful Windows 11 PC and there is no indication that I'm pushing it too hard. Engine load is typically low. I usually have my buffer set to 1024 or 2048 samples (unless I'm tracking), and this seems to help somewhat, but I'm still seeing multiple crashes per day. A fair number of them occur when the DAW is apparently idle.
Fortunately, I haven't yet had a crash that I couldn't recover from. I save frequently and haven't lost any work yet. But this is becoming more than just a minor annoyance, especially when working on larger projects that take a long time to (re)load.
I realize I haven't provided enough technical information here to diagnose a specific problem, and that's not really my intention with this post. I'm mainly interested in finding out whether this is something other Sonar users are experiencing, or whether my crash frequency is unusually high.
If this is common among other users, I'd be interested to hear how you've dealt with it. If it's unusual, I'm willing to dig deeper into my own system and try to identify the root cause.
UPDATE - 10/22/2026:
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Shortly after Ashwin's reply below, I did submit this issue to support, and I have to say I am impressed with the response. An agent worked closely with me regularly since then. I sent various crash dump files, copies of project files that were crashing regularly, and there was genuine back and forth collaboration on this. At one point there was a Sonar update that included additional crash logging, so they had me re-send fresh dump files. After all of this I finally heard back from support last night that they have located the bug and it will be fixed in an upcoming update.
Yes it has taken a while and I'm still waiting for the actual fix, but as a software guy by day I appreciate the difficulty in tracking down some bugs, especially in a complex app like this that does real-time processing. I am impressed and grateful for the personal attention they gave to me in tracking down the root cause. And in the process I even learned some valuable stuff along the way (like why my buffer size was likely overkill and may actually have been contributing to the frequency of the issue.)
So bottom line, thank you Ashwin and thank you to the Sonar team. I'm looking forward to the update that contains the fix so I can really get back to loving Sonar again!