Luxcore crashes with renderengine.type=FILESAVER and visibility map

[neo2068]

Under windows Luxcore crashes if the renderengine.type = FILESAVER and it tries to create a visibility map.
To reproduce the error export a scene with a light source which support visibility map in LuxCoreUI or select 'Only write LuxCore scene' in BlendLuxCore and hit F12. blender exits with EXCEPTION_ACCESS_VIOLATION. LuxcoreUI crashes during 'Building visibility map...'

Export current scene to file in binary format: C:\tmp\test
[SDL][46.171] Saving serialized mesh: room-nowall.ply
[SDL][46.171] Saving serialized mesh: luxball-inner.ply
[SDL][46.203] Saving serialized mesh: luxball-text.ply
[SDL][46.203] Saving serialized mesh: luxball-shell.ply
[SDL][46.468] Saving serialized mesh: blacktext.ply
[SDL][46.781] Saving serialized image map: ../simple-mat/sky.exr
[LuxCore][47.546] Render configuration saved: 5712 Kbytes
[LuxCore][49.281] Convergence test first pass
Export current scene to directory in text format: C:\tmp\texttest
[LuxCore][60.375] [GeForce GTX 1080 Intersect] Memory used for OpenCL image pipeline: 20552Kbytes
[SDL][60.406] Camera type: perspective
[SDL][60.406] Camera position: Point[1.1, -2.1, 1]
[SDL][60.406] Camera target: Point[0, 0, 0.4]
[SDL][60.406] Camera clipping plane disabled
Film size adjusted: 960x540 (Frame buffer size: 960x540)
[LuxCore][60.406] Film resolution: 960x540
[SDL][60.406] Film output definition: RGB_IMAGEPIPELINE [image.png]
[SDL][60.421] Image pipeline: film.imagepipeline
[SDL][60.421] Image pipeline step 0: TONEMAP_LINEAR
[SDL][60.421] Image pipeline step 1: GAMMA_CORRECTION
[SDL][60.421] Film output definition: RGB_TONEMAPPED [luxball_RGB_TONEMAPPED.png]
[LuxRays][60.437] OpenCL Platform 0: NVIDIA Corporation
[LuxRays][60.437] OpenCL Platform 1: Intel(R) Corporation
[LuxRays][60.437] OpenCL Platform 2: Advanced Micro Devices, Inc.
[LuxRays][60.437] Device 0 name: NativeThread
[LuxRays][60.437] Device 0 type: NATIVE_THREAD
[LuxRays][60.453] Device 0 compute units: 1
[LuxRays][60.453] Device 0 preferred float vector width: 4
[LuxRays][60.453] Device 0 max allocable memory: 0MBytes
[LuxRays][60.453] Device 0 max allocable memory block size: 0MBytes
[LuxRays][60.453] Device 1 name: GeForce GTX 1080
[LuxRays][60.453] Device 1 type: OPENCL_GPU
[LuxRays][60.468] Device 1 compute units: 20
[LuxRays][60.468] Device 1 preferred float vector width: 1
[LuxRays][60.468] Device 1 max allocable memory: 8192MBytes
[LuxRays][60.468] Device 1 max allocable memory block size: 2048MBytes
[LuxRays][60.468] Device 2 name: GeForce GTX 780
[LuxRays][60.468] Device 2 type: OPENCL_GPU
[LuxRays][60.468] Device 2 compute units: 12
[LuxRays][60.468] Device 2 preferred float vector width: 1
[LuxRays][60.484] Device 2 max allocable memory: 3072MBytes
[LuxRays][60.484] Device 2 max allocable memory block size: 768MBytes
[LuxRays][60.484] Device 3 name: Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz
[LuxRays][60.500] Device 3 type: OPENCL_CPU
[LuxRays][60.500] Device 3 compute units: 12
[LuxRays][60.500] Device 3 preferred float vector width: 8
[LuxRays][60.500] Device 3 max allocable memory: 32668MBytes
[LuxRays][60.500] Device 3 max allocable memory block size: 8167MBytes
[LuxRays][60.515] Device 4 name: Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz
[LuxRays][60.515] Device 4 type: OPENCL_CPU
[LuxRays][60.515] Device 4 compute units: 12
[LuxRays][60.515] Device 4 preferred float vector width: 8
[LuxRays][60.515] Device 4 max allocable memory: 32668MBytes
[LuxRays][60.515] Device 4 max allocable memory block size: 8167MBytes
[LuxRays][60.531] Preprocessing DataSet
[LuxRays][60.531] Total vertex count: 223352
[LuxRays][60.531] Total triangle count: 260780
[LuxRays][60.531] Preprocessing DataSet done
[LuxCore][60.609] Building visibility map of light source: infinitelight
[LuxCore][69.328] Visibility samples: 0/1000000 (0%)

=> Crash

[Dade916]

I should have fixed the problem.