There is no function named 'LWLibAvVideoSource'

[xasarer536]

I keep getting this error in AviSynth+.

AVSMeter 3.0.9.0 (x64), (c) Groucho2004, 2012-2021

VersionString:              AviSynth+ 3.7.5 (r4289, 3.7, x86_64)
VersionNumber:              3.75
File / Product version:     3.7.5.0 / 3.7.5.0
Interface Version:          11
Multi-threading support:    Yes
Avisynth.dll location:      C:\WINDOWS\SYSTEM32\avisynth.dll
Avisynth.dll time stamp:    2025-04-20, 20:08:56 (UTC)
PluginDir2_5 (HKLM, x64):   C:\Program Files (x86)\AviSynth+\plugins64
PluginDir+   (HKLM, x64):   C:\Program Files (x86)\AviSynth+\plugins64+


[C 2.5 Plugins (64 Bit)]  [Version, Time stamp]
C:\Program Files (x86)\AviSynth+\plugins64+\AvsInPaint.dll  [1.3.0.0, 2021-10-25]

[C++ 2.6 Plugins (64 Bit)]  [Version, Time stamp]
C:\Program Files (x86)\AviSynth+\plugins64+\ConvertStacked.dll  [n/a, 2023-07-15]
C:\Program Files (x86)\AviSynth+\plugins64+\DirectShowSource.dll  [n/a, 2023-07-15]
C:\Program Files (x86)\AviSynth+\plugins64+\ffms2.dll  [n/a, 2024-05-28]
C:\Program Files (x86)\AviSynth+\plugins64+\fft3dfilter.dll  [2.10.0.0, 2021-10-18]
C:\Program Files (x86)\AviSynth+\plugins64+\FrameSel_x64.dll  [2.20.0.0, 2018-04-20]
C:\Program Files (x86)\AviSynth+\plugins64+\grunt.dll  [1.0.2.0, 2020-04-30]
C:\Program Files (x86)\AviSynth+\plugins64+\ImageSeq.dll  [n/a, 2023-07-15]
C:\Program Files (x86)\AviSynth+\plugins64+\LSMASHSource.dll  [1125.0.0.0, 2023-04-30]
C:\Program Files (x86)\AviSynth+\plugins64+\masktools2.dll  [2.2.30.0, 2022-02-19]
C:\Program Files (x86)\AviSynth+\plugins64+\neo-fft3d.dll  [1.0.0.0, 2021-08-17]
C:\Program Files (x86)\AviSynth+\plugins64+\RT_Stats_x64.dll  [2.0.12.0, 2018-11-25]
C:\Program Files (x86)\AviSynth+\plugins64+\Shibatch.dll  [n/a, 2023-07-15]
C:\Program Files (x86)\AviSynth+\plugins64+\TimeStretch.dll  [n/a, 2023-07-15]
C:\Program Files (x86)\AviSynth+\plugins64+\VDubFilter.dll  [n/a, 2023-07-15]

[Scripts (AVSI)]  [Time stamp]
C:\Program Files (x86)\AviSynth+\plugins64+\colors_rgb.avsi  [2022-10-06]
C:\Program Files (x86)\AviSynth+\plugins64+\DoomDelogo.avsi  [2023-05-09]
C:\Program Files (x86)\AviSynth+\plugins64+\FFMS2.avsi  [2023-07-22]
C:\Program Files (x86)\AviSynth+\plugins64+\InpaintDelogo.avsi  [2023-03-18]

[Uncategorized DLLs (64 Bit)]  [Version, Time stamp]
C:\Program Files (x86)\AviSynth+\plugins64+\libfftw3-3.dll  [n/a, 2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\libfftw3f-3.dll  [n/a, 2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\libfftw3l-3.dll  [n/a, 2016-07-30]

[Uncategorized files]  [Time stamp]
C:\Program Files (x86)\AviSynth+\plugins64+\bench.exe  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\benchf.exe  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\benchl.exe  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\colors_rgb.txt  [2022-10-06]
C:\Program Files (x86)\AviSynth+\plugins64+\ffms2.lib  [2024-05-28]
C:\Program Files (x86)\AviSynth+\plugins64+\ffmsindex.exe  [2024-05-28]
C:\Program Files (x86)\AviSynth+\plugins64+\fftw-wisdom.exe  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\fftw3.f  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\fftw3.f03  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\fftw3.h  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\fftw3l.f03  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\fftw3q.f03  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\fftwf-wisdom.exe  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\fftwl-wisdom.exe  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\libfftw3-3.def  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\libfftw3f-3.def  [2016-07-30]
C:\Program Files (x86)\AviSynth+\plugins64+\libfftw3l-3.def  [2016-07-30]



[Plugin errors/warnings]
________________________________________________________________________________________________________

Cannot load file 'C:/Program Files (x86)/AviSynth+/plugins64+/ImageSeq.dll'. Platform returned code 126:
The specified module could not be found.

Dependencies that could not be loaded:
  DevIL.dll

[xasarer536]

Got a different error now: "Load Imageseq.dll with LoadPlugin or Install Avisynth+" except I'm already using Avisynth+.

[ChristianundCo]

Look at your C:\Programs ... \Avisynth+\Plugins Folder - if there is the LSMASHSource.dll

Windows Defender recognizes it as a virus last days and deletes it automatically. (the 32 bit version - 64 bit has no problems)

[davexnet]

Check to see if you have a copy of devIL.dll in \windows\system32 and \windows\sysWOW64.
I think it gets installed with Avisynth itself