Render lightning effect - outcome is always black

The effect looks good in a separate layer, but when exporting to a jpeg, the outcome is always a black picture.

Even when I try to make the effect on a merged layer in a new psd-document, it all looks good, but when I try to move it back to the original file (not exporting, just moving), then again the layer becomes black.

I have the latest update of the program, and the computer performance should be more than enough.

Adobe Photoshop Version: 20.0.1 20181029.r.41 2018/010/29: 1197484  x64

Number of Launches: 240

Operating System: Windows 10 64-bit

Version: 10 or greater 10.0.17134.1

System architecture: Intel CPU Family:6, Model:14, Stepping:3 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, AVX, AVX2, HyperThreading

Physical processor count: 4

Logical processor count: 8

Processor speed: 3504 MHz

Built-in memory: 24497 MB

Free memory: 15922 MB

Memory available to Photoshop: 22425 MB

Memory used by Photoshop: 71 %

Alias Layers: Disabled.

Modifier Palette: Enabled.

Highbeam: Enabled.

Image tile size: 1024K

Image cache levels: 4

Font Preview: Medium

TextComposer: Latin

Display: 1

Display Bounds: top=0, left=0, bottom=1080, right=1920

Display: 2

Display Bounds: top=86, left=-1680, bottom=1136, right=0

OpenGL Drawing: Enabled.

OpenGL Allow Old GPUs: Not Detected.

OpenGL Drawing Mode: Advanced

OpenGL Allow Normal Mode: True.

OpenGL Allow Advanced Mode: True.

AIFCoreInitialized=1

AIFOGLInitialized=1

OGLContextCreated=1

NumGLGPUs=1

NumCLGPUs=1

NumNativeGPUs=0

glgpu[0].GLVersion="4.1"

glgpu[0].IsIntegratedGLGPU=0

glgpu[0].GLMemoryMB=4096

glgpu[0].GLName="NVIDIA Quadro M2000"

glgpu[0].GLVendor="NVIDIA Corporation"

glgpu[0].GLVendorID=4318

glgpu[0].GLDriverVersion="23.21.13.9174"

glgpu[0].GLRectTextureSize=16384

glgpu[0].GLRenderer="Quadro M2000/PCIe/SSE2"

glgpu[0].GLRendererID=5168

glgpu[0].HasGLNPOTSupport=1

glgpu[0].GLDriver="C:\WINDOWS\System32\DriverStore\FileRepository\nvwu.inf_amd64_ecdec863aebcccbe\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvwu.inf_amd64_ecdec863aebcccbe\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvwu.inf_amd64_ecdec863aebcccbe\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvwu.inf_amd64_ecdec863aebcccbe\nvldumdx.dll"

glgpu[0].GLDriverDate="20180604000000.000000-000"

glgpu[0].CanCompileProgramGLSL=1

glgpu[0].GLFrameBufferOK=1

glgpu[0].glGetString[GL_SHADING_LANGUAGE_VERSION]="4.60 NVIDIA"