KAK and Fusion 8 B2, crashes

I did some tests today, and KAK is truely the best keyer I have seen... but

i crashes my Fusion 8 Beta2 on my mac... both my macbook pro (at 10.11.2) and my nMP D700 (10.10.5)

Fusion just goes away and finder is back... console gives:

Thread 94 Crashed:: DispatchThread
0 libfusionsystem.dylib 0x000000010284c840 ffi_Image_uncast + 0

and:

Thread 107 Crashed:: DispatchThread
0 libfusionscript.dylib 0x000000010a9b1c1b ScriptVal::Set(ScriptValType, void const*) + 587
1 libfusionscript.dylib 0x000000010a9b2752 ScriptVal::AddKey(ScriptVal const&) + 146
2 libfusionscript.dylib 0x000000010a9b1ec6 ScriptVal::Set(ScriptValType, void const*) + 1270
3 libfusionscript.dylib 0x000000010a9b1f8c ScriptVal::operator=(ScriptVal const&) + 28
4 libfusionsystem.dylib 0x000000010aeda98d Image::Init(TagList const&) + 3405
5 libfusionsystem.dylib 0x000000010aed9b2c Image::Image(TagList const&) + 252
6 libfusionsystem.dylib 0x000000010af0d982 NewImageTagList(TagList const&) + 34
7 libFusionOperators.dylib 0x00000000c23daa4b BetterResize::Process(Request*) + 1867
8 libfusionsystem.dylib 0x000000010b29db15 Operator::HandleRequest(Request*) + 14837
9 libfusionsystem.dylib 0x000000010b2925e5 Operator::HandleMsg(Message*) + 1029
10 libfusionsystem.dylib 0x000000010b4f0b38 ThreadedOperator::ThreadMain() + 88
11 libfusionsystem.dylib 0x000000010b4f0800 ThreadedOperatorDispatcher::Dispatch(Object*) + 16
12 libfusionsystem.dylib 0x000000010b4edbb2 DispatchThread::ThreadMain() + 338
13 libfusionsystem.dylib 0x000000010b4ed88f ThreadInit(DispatchThread*) + 31
14 libsystem_pthread.dylib 0x00007fff8a7f8c13 _pthread_body + 131
15 libsystem_pthread.dylib 0x00007fff8a7f8b90 _pthread_start + 168
16 libsystem_pthread.dylib 0x00007fff8a7f6375 thread_start + 13