Random crashes with Avisynth Filter

Any ideas on how to stop crashing due to Avisynth Filter?

Windows 11 Event Viewer says this:

Faulting application name: Media Center 34.exe, version: 34.0.41.0, time stamp: 0x685aa7a5
Faulting module name: avisynth_filter_64.ax, version: 1.4.7.0, time stamp: 0x651db54a
Exception code: 0xc0000409
Fault offset: 0x0000000000050c59
Faulting process id: 0x0x1150
Faulting application start time: 0x0x1DBE53C4E0B30B4
Faulting application path: C:\Program Files\J River\Media Center 34\Media Center 34.exe
Faulting module path: C:\Program Files (x86)\SVP 4\avsf\avisynth_filter_64.ax
Report Id: f3099a4c-2dc9-4e8a-a744-a15592677bde
Faulting package full name:
Faulting package-relative application ID: