Make sure you're using latest VEPro update.
Also try decoupling each VEP instance.
This feature was added to reduce save times for those who experience long save times.
But you must be saving .viframe files for every VEP instance or a metaframe file in order to recall your VEP setup the next time you load the DP project.
Done to all of the above. I'm running VE Pro on a slave, so the only thing I can think of is that it's to do with the audiounit plug-on. (It it is, indeed, a VE PRO problem).
If anyone can understand these things, here's a crashlog
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000080fb3000
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0 libSystem.B.dylib 0xffff0831 __memcpy + 145
1 com.apple.CoreFoundation 0x9790506e CFDataReplaceBytes + 238
2 com.apple.CoreFoundation 0x97904cfc __CFDataInit + 748
3 ...audiounit.viennaensemblepro 0x697fb98c ViennaEnsembleProEntry + 5084
4 ...audiounit.viennaensemblepro 0x697e489b NewMachOPlugIn + 62107
5 ...audiounit.viennaensemblepro 0x697e76e1 NewMachOPlugIn + 73953
6 ...audiounit.viennaensemblepro 0x697fa5d5 ViennaEnsembleProEntry + 37
7 ...ple.CoreServices.CarbonCore 0x9412ed87 CallComponentDispatch + 29
8 ...apple.audio.units.AudioUnit 0x9802a341 AudioUnitGetProperty + 67
9 com.MOTU.MAS.AudioUnitSupport 0x17b96bca AudioUnits::Base::getClassInfo() + 346
10 com.MOTU.MAS.AudioUnitSupport 0x17b96ce9 AudioUnits::Base::writeClassInfo(IMotuStream*) + 25
11 com.MOTU.MAS.AudioUnitSupport 0x17bc2a62 MasAUSupportSettings::WriteSetting(MotuException*, long, IMotuStream*) + 82
12 com.motu.MAS.framework 0x01812e7a MAS83148 + 132
13 com.motu.DigitalPerformer 0x001370e4 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 233108
14 PerfEngine.dylib 0x01d25aea EffectSettingsImpl::WriteASetting(EffectSettingsImpl::Transaction&, short) + 198
15 PerfEngine.dylib 0x01d261c8 EffectSettingsImpl::WriteAllSettings(CStream&) + 76
16 PerfEngine.dylib 0x01d20c45 EffectImpl::SaveSettings() + 165
17 PerfEngine.dylib 0x01c7721c InsertSettingsMgr::SaveSettings(InsertsSetKey const&, Effect*) + 134
18 PerfEngine.dylib 0x01c7d298 InsertsSet::SaveSlotState(InsertSettingsMgr&, InsertsSetIterator const&) + 166
19 PerfEngine.dylib 0x01c7d3cb InsertsSet::Write(PerfFileIOContext const&) + 61
20 PerfEngine.dylib 0x01c7d422 InsertsSet::WriteInserts(PerfFileIOContext const&, ntrackRec**) + 56
21 com.motu.DigitalPerformer 0x001931ad UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 610141
22 PerfEngine.dylib 0x01cddb02 TrackFolder::Write(CStream&, PerfFileIOContext const&) + 336
23 PerfEngine.dylib 0x01cddb2a TrackFolder::Write(CStream&, PerfFileIOContext const&) + 376
24 com.motu.DigitalPerformer 0x00184e56 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 551942
25 com.motu.DigitalPerformer 0x00185248 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 552952
26 com.motu.DigitalPerformer 0x001874b7 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 561767
27 com.motu.DigitalPerformer 0x001888e3 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 566931
28 com.motu.DigitalPerformer 0x001d7808 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 890296
29 com.motu.DigitalPerformer 0x001dcb10 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 911552
30 com.motu.DigitalPerformer 0x001d4158 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 876296
31 com.motu.DigitalPerformer 0x001dc214 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 909252
32 com.motu.DigitalPerformer 0x001d9804 UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 898484
33 com.motu.DigitalPerformer 0x001da30b UniqueListEditDlg<SavedBounceSettings, BounceSettingsKey, BounceSettingsListKeyProvider>::HandleItem(short, long) + 901307
34 com.motu.DigitalPerformer 0x0003a021 0x1000 + 233505
35 DPBasicUI.dylib 0x010932e7 RequestHandler::HandleCommand(RequestHandler*, CommandSpecifier const&, CommandActivator const*) + 57
36 com.motu.DigitalPerformer 0x000332cc 0x1000 + 205516
37 DPBasicUI.dylib 0x010932e7 RequestHandler::HandleCommand(RequestHandler*, CommandSpecifier const&, CommandActivator const*) + 57
38 DPBasicUI.dylib 0x0109d7f0 ChainOfCommand::HandleBeforeCommands::HandleBeforeCommands() + 310
39 DPBasicUI.dylib 0x0109e420 ChainOfCommand::DispatchMenuSelection(long) + 2530
40 PerfFoundation.dylib 0x021b9e48 CIdleChore::IdleAndReturnNextIdleTime() + 356
41 PerfFoundation.dylib 0x021b9f6f CIdleChore::Idle(bool) + 11
42 PerfFoundation.dylib 0x021dbabc GlogEventConnection::GlogEventConnection(MotuOSWindow::OSWindow*) + 570
43 PerfFoundation.dylib 0x021dbe57 GlogEventConnection::GlogEventConnection(MotuOSWindow::OSWindow*) + 1493
44 PerfFoundation.dylib 0x021db9c0 GlogEventConnection::GlogEventConnection(MotuOSWindow::OSWindow*) + 318
45 PerfFoundation.dylib 0x021dc930 CarbonEventHandler::EventHandlerProc(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 120
46 com.apple.HIToolbox 0x947270a9 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 1567
47 com.apple.HIToolbox 0x94726370 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 411
48 com.apple.HIToolbox 0x94748b55 SendEventToEventTarget + 52
49 com.apple.HIToolbox 0x9475a9c3 ToolboxEventDispatcherHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 2161
50 com.apple.HIToolbox 0x947274fa DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 2672
51 com.apple.HIToolbox 0x94726370 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 411
52 com.apple.HIToolbox 0x94748b55 SendEventToEventTarget + 52
53 com.apple.HIToolbox 0x947aac16 SendTSMEvent + 82
54 com.apple.HIToolbox 0x947aa593 SendUnicodeTextAEToUnicodeDoc + 700
55 com.apple.HIToolbox 0x947aa19d TSMKeyEvent + 998
56 com.apple.HIToolbox 0x9479b122 TSMProcessRawKeyEvent + 2515
57 com.apple.HIToolbox 0x947e8b4f HandleCompatibilityKeyEvent + 331
58 com.apple.HIToolbox 0x94722e36 HIApplication::EventHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 2716
59 com.apple.HIToolbox 0x947270a9 DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 1567
60 com.apple.HIToolbox 0x94726370 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 411
61 com.apple.HIToolbox 0x947261cf SendEventToEventTargetWithOptions + 58
62 com.apple.HIToolbox 0x9475a8f7 ToolboxEventDispatcherHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 1957
63 com.apple.HIToolbox 0x947274fa DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 2672
64 com.apple.HIToolbox 0x94726370 SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 411
65 com.apple.HIToolbox 0x94748b55 SendEventToEventTarget + 52
66 com.apple.HIToolbox 0x948d1df7 ToolboxEventDispatcher + 86
67 com.apple.HIToolbox 0x948d1f2f RunApplicationEventLoop + 243
68 com.motu.DigitalPerformer 0x007c1e2a SndBiteStripTimeScrollMouseWheelHandler::Clone() + 744976
69 com.motu.DigitalPerformer 0x000228b2 0x1000 + 137394
70 com.motu.DigitalPerformer 0x000227d9 0x1000 + 137177