Using 4.5.1, applying any compression to an animation in persona and its causing the engine to crash the moment the compression dialog box is closed.
MachineId:AB0D832940FBD5ACA97A7ABF6FA984AF
EpicAccountId:d7019367a2aa4227a9ca9d8be9e2a8ee
Unknown exception - code 00000001 (first/second chance not available)
Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.5\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 536]
Array index out of bounds: 0 from an array of size 0
KERNELBASE + 24684 bytes
UE4Editor_Core + 3174852 bytes
UE4Editor_Core + 1677512 bytes
UE4Editor_Core + 1566866 bytes
UE4Editor_Engine + 10970149 bytes
UE4Editor_Engine + 10693942 bytes
UE4Editor_Engine + 11269390 bytes
UE4Editor_Engine + 11264803 bytes
UE4Editor_Engine + 10917499 bytes
UE4Editor_Engine + 11310721 bytes
UE4Editor_AnimGraph + 245275 bytes
UE4Editor_Engine + 10838747 bytes
UE4Editor_Engine + 7190041 bytes
UE4Editor_Engine + 7353983 bytes
UE4Editor_Engine + 7382176 bytes
UE4Editor_UnrealEd + 6413073 bytes
UE4Editor_Engine + 8157884 bytes
UE4Editor_Engine + 7449550 bytes
UE4Editor_Engine + 1589783 bytes
UE4Editor_Engine + 1651574 bytes
UE4Editor_Engine + 8779958 bytes
UE4Editor_Engine + 8829659 bytes
UE4Editor_Core + 746772 bytes
UE4Editor_Core + 747165 bytes
UE4Editor_Core + 870341 bytes
UE4Editor_Engine + 9060549 bytes
UE4Editor_Engine + 8971673 bytes
UE4Editor_Engine + 8982533 bytes
UE4Editor_Engine + 5590422 bytes
UE4Editor_Engine + 5619151 bytes
UE4Editor_Persona + 1142235 bytes
UE4Editor_UnrealEd + 1896152 bytes
UE4Editor_UnrealEd + 6486374 bytes
UE4Editor!FEngineLoop::Tick() + 3524 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\launchengineloop.cpp:2129]
UE4Editor!GuardedMain() + 479 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:201]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]