AviSynth64 on 64-bit XP

[w2kpro]

I have being trying to get Avisynth64 running on Windows XP x64. I have installed Avisynth v2.5.8 which setup the correct directory structure in C:\Program Files (x86), and all the relevant 64-bit files have been copied to their correct locations in plugins64 and system32. The avisynth.reg file has also been imported into the registry. As a test I created a test avs file called version.avs, that contains the version() function. When I open version.avs in 64-bit VirtualDub, I get the following error message:

"AVI Import Filter errorunknown) (80040154)"

The same procedure works OK when using Win7 x64, so there may be a compatibility problem with avisynth64 which was compiled using the Win7 SDK in Vista compatibility mode.

Has anyone had any success in running Avisynth on XP x64?

[jman98]

I know that is super critical to you as you've now posted it in the 3 different forums and are about to face the wrath of moderators for cross-posting. But did you consider the following?

Nobody here may have ever used AviSynth64 under XP 64 bit. XP 64 was kind of rare.
It just may not work under XP 64 bit.

I play around with Avisynth64 under Win 7 for fun because I just don't use Avisynth for anything all that complicated so I can use the 64 bit one. However, functionality is extremely limited. 32 bit Avisynth does work under 64 bit Windows. Have you considered that maybe it's just not worth the effort and you should just use the 32 bit one?

[Nelson37]

I've had enough of similar experiences with XP 64 that my advice would be the same for ANYTHING that you can't get to run under it.

Don't. Just Don't. Forget it and move on to something that will actually work.

[w2kpro]

If anyone is interested I have found the solution to the above problem.

This applies to avisynth64_4-16-10 on Win XP x64 sp2

1) The reg file supplied with the build must be imported using 64-bit regedit32 (C:\Windows\System32\regedit32.exe), or the content will be redirected to Classes\Wow6432Node\CLSID.

2) The avisynth64.dll will not load if .Net runtime is not installed - I am using v3.5 sp1.