user18155: I installed anew version of AviSynth+ and besides solving some problems with its DirectShowSource.dll I discover (from the Setup Log file) that it consider C:\ as its autoload directory.
It helped me - I copied DLLs there. But it is neither elegant nor useful solution (as I have installed both 32- and 64-bit versions).
How to change configuration to return to default plugins+ and plugins64+ directories?

user1871: As the docs indicate, you have to create registry keys to tell Avisynth+ where to look. They are
PluginDir+ in Software/Avisynth in HKEY_CURRENT_USER
PluginDir+ in Software/Avisynth in HKEY_LOCAL_MACHINE
PluginDir2_5 in Software/Avisynth in HKEY_CURRENT_USER
PluginDir2_5 in Software/Avisynth in HKEY_LOCAL_MACHINE

There is no separate key for 32 or 64-bit. Since 32-bit AVS will not load 64-bit plugins, I suggest setting the first key in the above list to the 64-bit plugins folder, and the 2nd to the 32-bit. The 64-bit AVS DLL when loaded will use plugins from the first folder. The 32-bit DLL will skip them and load from the 2nd folder.

18155: <p>I installed anew version of <code>AviSynth+</code> and besides solving some problems with its <code>DirectShowSource.dll</code> I discover (from the <code>Setup Log</code> file) that it consider <code>C:\</code> as its autoload directory.</p>

<p>It helped me - I copied <code>DLLs</code> there. But it is neither elegant nor useful solution (as I have installed both 32- and 64-bit versions).</p>

<p>How to change configuration to return to default <code>plugins+</code> and <code>plugins64+</code> directories?</p>
 1871: <p>As the docs indicate, you have to create registry keys to tell Avisynth+ where to look. They are</p>

<pre><code>PluginDir+ in Software/Avisynth in HKEY_CURRENT_USER
PluginDir+ in Software/Avisynth in HKEY_LOCAL_MACHINE
PluginDir2_5 in Software/Avisynth in HKEY_CURRENT_USER
PluginDir2_5 in Software/Avisynth in HKEY_LOCAL_MACHINE
</code></pre>

<p>There is no separate key for 32 or 64-bit. Since 32-bit AVS will not load 64-bit plugins, I suggest setting the first key in the above list to the 64-bit plugins folder, and the 2nd to the 32-bit. The 64-bit AVS DLL when loaded will use plugins from the first folder. The 32-bit DLL will skip them and load from the 2nd folder.</p>
