I've been experiencing frequent crashes with Live 9.1.7 and Max4Live (6.1.9) and I think that Max's “Ctrl1LFO” device is the culprit. The crash will usually occur within about 20mins to an hour of working on a project containing multiple instances of this device. Live's cpu meter will shoot up to 2000+ %, audio will freeze and Live crashes.

I set up a test project consisting of 6 instances of Ctrl1LFO modulating a series of Max API dials (no plugins, no audio of any kind), and it crashed within 20 minutes.

Projects without this device are generally stable, but it's one of the most useful devices in the API and I tend use it in most of my work.

The issue seemed to occur after updating to Live 9 (or possibly after one of the updates to Live 9/Max 6). I don't recall it ever being an issue in Live 8.

Application Name:    Ableton Live 9 Standard.exe

Additional Information 2:    b238d08215055a04ba50de379fc00ac8

Additional Information 4:    4929fdb4dd3405245665c360a2c27223

Has anyone else experienced this problem? Any help/insight would be greatly appreciated.

Problem Event Name:	APPCRASH
  Application Name:	Ableton Live 9 Standard.exe
  Application Version:	1.0.0.1
  Application Timestamp:	54a19d7a
  Fault Module Name:	MaxPlug.DLL
  Fault Module Version:	6.1.9.15810
  Fault Module Timestamp:	5436d518
  Exception Code:	c0000005
  Exception Offset:	000427c0
  OS Version:	6.1.7601.2.1.0.768.3
  Locale ID:	2057
  Additional Information 1:	b238
  Additional Information 2:	b238d08215055a04ba50de379fc00ac8
  Additional Information 3:	4929
  Additional Information 4:	4929fdb4dd3405245665c360a2c27223

Live 9.1.7 + M4L 32 bit
Max 6.1.9 (standalone license) 32 bit

OS: Windows 7 64 bit
Cpu: i7 920
Ram: 6gb

Max for Live's Ctrl1LFO crashing Live 9