Well, it seems that AD is crashing during the copy protection check on plugin instance creation... We can't do anything against that, except asking XLNAudio to fix the issue
Thread 0 Crashed:: Juce Message Thread Dispatch queue: com.apple.main-thread
0 libobjc.A.dylib 0x9a529a87 objc_msgSend + 23
1 com.apple.CoreFoundation 0x95c7b288 CFEqual + 184
2 com.apple.CoreFoundation 0x95c7b1be __CFDictionaryStandardEquateKeys + 46
3 com.apple.CoreFoundation 0x95c6d991 CFBasicHashFindBucket + 1681
4 com.apple.CoreFoundation 0x95c6d2dd CFDictionaryGetValue + 109
5 com.apple.CoreFoundation 0x95e02d1b -[CFPrefsPlistSource copyValueForKey:] + 59
6 com.apple.CoreFoundation 0x95dfe28c ___CFPreferencesCopyValueWithContainer_block_invoke_0 + 44
7 com.apple.CoreFoundation 0x95dffef3 +[CFPrefsSource withSourceForIdentifier:user:byHost:container:perform:] + 979
8 com.apple.CoreFoundation 0x95dfe226 _CFPreferencesCopyValueWithContainer + 246
9 com.apple.CoreFoundation 0x95cb2b2e CFPreferencesCopyValue + 46
10 com.xlnaudio.addictivedrumsvstau 0x091e0942 XDRestoreActivationData(std::vector<unsigned char, std::allocator<unsigned char> >&) + 162
11 com.xlnaudio.addictivedrumsvstau 0x091e0bf1 scXDProtection::GetActivationDatabase() + 113
12 com.xlnaudio.addictivedrumsvstau 0x091e0fd5 scXDProtection::ActivateFromLicenseFiles(boost::shared_ptr<iXDResourceInputStream>&, boost::shared_ptr<iXDResourceCatalog>&) + 69
13 com.xlnaudio.addictivedrumsvstau 0x090b69aa scXDConfig::scXDConfig(void*, std::string const&, std::string const&, std::string const&, std::string const&) + 11850
14 com.xlnaudio.addictivedrumsvstau 0x090c159a cXDCentral::cXDCentral(void*, std::string const&, std::string const&, std::string const&, std::string const&) + 1914
15 com.xlnaudio.addictivedrumsvstau 0x0908d278 cXDVST::Init(void*) + 1864
16 com.xlnaudio.addictivedrumsvstau 0x0908c764 XDVSTMain + 548
17 com.xlnaudio.addictivedrumsvstau 0x091d1e20 VSTPlugIn::open() + 208
18 com.xlnaudio.addictivedrumsvstau 0x091d8615 SymbiosisComponent::SymbiosisComponent(ComponentInstanceRecord*) + 3525
19 com.xlnaudio.addictivedrumsvstau 0x091de045 SymbiosisEntry + 133
20 com.apple.CoreServices.CarbonCore 0x9665aade CallComponent + 151
21 com.apple.CoreServices.CarbonCore 0x9665ab38 CallComponentDispatch + 29
22 com.apple.CoreServices.CarbonCore 0x966edad7 CallComponentOpen + 43
23 com.apple.CoreServices.CarbonCore 0x9665a6a5 OpenAComponent + 443
24 com.apple.audio.toolbox.AudioToolbox 0x92776ba7 AudioComponentMgr::NewInstance(OpaqueAudioComponent*, ComponentInstanceRecord*&) + 89
25 com.apple.audio.toolbox.AudioToolbox 0x9268a388 _AT_AudioComponentInstanceNew + 182