PT9.0.3 SIGBUS crashes - EuCon to blame?

[A Chapman]

My system :

2.2ghz i7 Macbook Pro, 10.6.7, 4GB RAM
Pro Tools 9.0.3 / EuControl 2.6.0 75358
Euphonix MC Mix

Audio / libraries are on an external FW800 drive.

My laptop is brand new, and I've been getting near constant crashes like this since my first day of using it, and installing PT9 and EuControl 2.6 - excerpts from a typical crash report :

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000ccecffa4
Crashed Thread: 23

If we scoot down to thread 23 we see the following :

Thread 23 Crashed:
0 ...igidesign.personality.EuCon 0x2c7123b7 SOCCreateObject + 139374
1 ...igidesign.personality.EuCon 0x2c720fbc SOCCreateObject + 199795
2 ...igidesign.personality.EuCon 0x2c722046 SOCCreateObject + 204029
3 ...igidesign.personality.EuCon 0x2c722a43 SOCCreateObject + 206586
4 com.digidesign.framework.HWC 0x2b466949 THWC_TokenListenerMgr::THWC_TokenListenerMgr(TBase Controller*, void*, TTokenTask*, TTokenTask*) + 459
5 ...gidesign.framework.ProTools 0x018d4694 MFortressHWBPEntryPoint_exit_mfort6317_ + 16087671
6 ...gidesign.framework.ProTools 0x018d48b7 MFortressHWBPEntryPoint_exit_mfort6317_ + 16088218
7 ...gidesign.framework.ProTools 0x012b63f6 MFortressHWBPEntryPoint_exit_mfort6317_ + 9672665
8 ...gidesign.framework.ProTools 0x015551c8 MFortressHWBPEntryPoint_exit_mfort6317_ + 12420523
9 ...gn.framework.CoreFoundation 0x004752f8 Sys_RawThreadTimerTask::Exec() + 132
10 ...gn.framework.CoreFoundation 0x00475256 Sys_RawThreadTask::Run() + 36
11 ...gn.framework.CoreFoundation 0x00492eec Sys_RawThread::ThreadIDsAreEqual(void*, void*) + 48
12 ...n.framework.PlatformSupport 0x03565a97 PSHardware_MatchDeviceInfo(TPSPCIDeviceInfo const*, TPSPCIDeviceInfo const*) + 8904
13 libSystem.B.dylib 0x99217819 _pthread_start + 345
14 libSystem.B.dylib 0x9921769e thread_start + 34

(My emphasis).

I've been using the MC Mix for a few months, and I've also been seeing these crashes on two other systems I've used (my old 2.5ghz C2D 2008 Macbook Pro, and an older C2D iMac). The crash reports don't *always* point to a thread with Eucon references, but I'd say certainly the majority of times they do.

I'm ruling out plugins, as I've tried editing with all of my third party plugs disabled using PT Plugin Manager, and I've still seen this error. No one thing seems to trigger it, but a favourite crash is when I route a bunch of tracks to a new aux input. However, I've even see it do this crash on save! (nasty!)

I've already set the MC Mix to a static IP as per the user guide. Seemed better for a day or so, but it's started up again now.

Any suggestions / help gratefully received!