mcedit2 err report

On Mac OS
Minecraft 1.7.10 modded


MCEdit version: 2.0.0-beta12
Python version: 2.7.12 (default, Jun 29 2016, 14:05:02)
[GCC 4.2.1 Compatible Apple LLVM 7.3.0 (clang-703.0.31)]
Platform: darwin
System version: Darwin-16.6.0-x86_64-i386-64bit
Processor: i386

Obtained a GL context with this format:
Valid: True
Version: 1.0
Hardware Accelerated: True
Depth buffer: True, 24
Double buffer: True
Rendering profile: PySide.QtOpenGL.QGLFormat.OpenGLContextProfile.NoProfile

Driver info:
GL_VERSION: 2.1 INTEL-10.25.13 (2, 1)
GL_VENDOR: 'Intel Inc.'
GL_RENDERER: 'Intel HD Graphics 5000 OpenGL Engine'

------

Unhandled Exception

Traceback (most recent call last):
  File "mcedit2/editorsession.py", line 1041, in export (self is a EditorSession)
  File "mcedit2/util/showprogress.py", line 77, in showProgress
  File "mceditlib/util/progress.py", line 26, in rescaleProgress
  File "mceditlib/block_copy.py", line 83, in copyBlocksIter
  File "mceditlib/blocktypes/__init__.py", line 457, in blocktypeConverter
IndexError: index 11362 is out of bounds for axis 0 with size 4096

mods installed:
1.7.10
AdvancedRocketry-1.7.10-1.0.19b.jar
aether-1.7.10-1.6.jar
ajaftcraft.jar(mcreator)
AnimationAPI-1.7.10.jar
AntiIdConflict-1.3.5-1.7.10.jar
appliedenergistics2-rv3-beta-6.jar
AstromechDroidsMod6.0.0-MC1.7.10.jar
Better-Storage-Mod-1.7.10.jar
BigReactors-0.4.3A.jar
boilerplate-1.7.10-6.3.0.81-universal.jar
BrandonsCore-1.0.0.11.jar
buildcraft-7.1.22.jar
Carpenters-Blocks-Mod-1.7.10.jar
carpentersblocks
CD4017BE_lib-1.7.10-2.7.3.jar
cfm-3.4.8-mc1.7.10.jar
CMD files.jar
CodeChickenCore-1.7.10-1.0.7.47-universal.jar
CoFHCore-[1.7.10]3.1.4-329.jar
copious-dogs-1.7.10-1.1.2.jar
coroutil-1.1.3 for MC v1.7.10.jar
CraftGuide-1.7.0.59-forge.jar
Custom Music Discs-1.7.jar
CustomMobSpawner 3.3.0.zip
CustomNPCs_1.7.10d(19jun17).jar
Dalek_Mod_1710.jar
DragonAPI+1.7.10+V19c.jar
DragonMounts-r41-1.7.10.jar
DrZharks MoCreatures Mod v6.3.1.zip
DVGS 1.5.2.jar
EnderCore-1.7.10-0.2.0.39_beta.jar
EnderIO-1.7.10-2.3.0.429_beta.jar
EnderStorage-1.7.10-1.4.7.37-universal.jar
Et Futurum-1.5.5.jar
ExpandedRedstone+1.7.10+V19a.jar
ExtraPlanets-1.7.10-1.9.6.jar
extrautilities-1.2.12.jar
Flans-Mod-1.7.10.jar
ForgeNBTEdit-universal-1.0.0.test.jar
fossilsarcheology-7.3.2.jar
Galacticraft-Planets-1.7-3.0.12.503.jar
GalacticraftCore-1.7-3.0.12.503.jar
Gilded-Games-Util-1.7.10.jar
Godzilla Mod-1.7.10-1.6.3.jar
Gollum-Core-Lib-1.7.10.jar
Grappling-Hook-Mod-1.7.10.jar
Gravity-Gun-Mod-1.7.10.jar
HardcoreEnderExpansion  MC-1.7.10  v1.8.6.jar
iChunUtil-4.2.2.jar
immibis-core-59.1.4.jar
Imnotcheating.jar(mcreator)
jaffas_0.7.3.jar
kdgcommons-1.0.5.jar
LibVulpes-1.7.10-0.1.19-universal.jar
Like1.8[1.7x].jar
liteloader-1.7.10.jar
littleMaidMob-lotsOfTextures.zip
littleMaidMob-OS-Tan-0.0.1.zip
LittleMaidMob-Sounds-1.5.2.rar
LittleMaidMobEnhanced-1.7.10-1.4.4.jar
littleMaidMobX
llibrary-1.5.1-1.7.10.jar
LovelyRobot-Mod-1.7.10.jar
LunatriusCore-1.7.10.jar
Mantle-1.7.10-0.3.2.jar
MAtmos_r28b__1.7.10.litemod
MCEF-1.7.10-0.6.jar
Mekanism-1.7.10-9.1.0.281.jar
MekanismGenerators-1.7.10-9.1.0.281.jar
MekanismTools-1.7.10-9.1.0.281.jar
MicdoodleCore-1.7-3.0.12.503.jar
Mine-Blade-Battlegear-2-Mod-1.7.10.jar
Minechem-1.7.10-5.0.5.398.jar
MoCreatures
monnef_core_0.7.3.jar
More-Pistons-Mod-1.7.10.jar
MorePlayerModels_1.7.10b.jar
MrTJPCore-1.7.10.jar
mychunkloader-1710.01.jar
NotEnoughIDs-1.4.3.4.jar
Okutils-1.7.2.jar
OpenBlocks-1.7.10-1.6.jar
OpenModsLib-1.7.10-0.10.jar
OptiFine_1.7.10_HD_U_D8.jar
p455w0rdslib-1.7.10-1.0.4.jar
Parzi's Star Wars Mod v1.3.3.jar
Pistronics-2-Mod-1.7.10.jar
Player-API-Core-1.7.10.jar
PortalGun-4.0.0-beta-6-fix-1.jar
PortalGunSounds.pak
PortalGunSounds.pak.md5
practicalxml-1.1.13.jar
QuantumFlux-1.7.10-1.3.4.jar
rafradek_tf2_weapons-1.7.10-0.6.9.4.jar
Rediscovered-1.7.10-1.3.jar
RenderPlayerAPI-1.7.10-1.4.jar
rivalrebels-1.7.10Y.jar
RotaryCraft+1.7.10+V19c.jar
SlimeVoid-Library-1.7.10.jar
SolarFlux-1.7.10-0.8b.jar
steamcraft2-1.7.10-B5.0.2-universal.jar
TF2Dispenser-1.7.10.jar
TF2Sentry-1.7.10.jar
TF2TeamAddon-1.7.10.jar
ThermalExpansion-[1.7.10]4.1.5-248.jar
ThermalFoundation-[1.7.10]1.2.6-118.jar
ThinkBigCore-1.4-[1.7.10].jar
Tree-Capitator-Mod-1.7.10.jar
tubestuff-59.0.4.jar
worldedit-forge-mc1.7.10-6.0-beta-01.jar
yarrcutemobmodels-1.0.8-1.7.10.jar