[Closed] virtualdub plugins not loading

I am trying to concatenate some flv files using virtualdub.
But plugins don't load. I am on a win64 system.

[!] Plugins: Failed to load
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\AC364.vdplugin"
: Cannot load plugin module
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\AC364.vdplugin"
: %1 is not a valid Win32 application.

[!] Plugins: Failed to load
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\FLIC64.vdplugin
": Cannot load plugin module
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\FLIC64.vdplugin
": %1 is not a valid Win32 application.

[!] Plugins: Failed to load
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\FLV64.vdplugin"
: Cannot load plugin module
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\FLV64.vdplugin"
: %1 is not a valid Win32 application.

[!] Plugins: Failed to load
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\MPEG264.vdplugi
n": Cannot load plugin module
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\MPEG264.vdplugi
n": %1 is not a valid Win32 application.

[!] Plugins: Failed to load
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\Matroska64.vdpl
ugin": Cannot load plugin module
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\Matroska64.vdpl
ugin": %1 is not a valid Win32 application.

[!] Plugins: Failed to load
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\WMV64.vdplugin"
: Cannot load plugin module
"K:\PortableApps\VirtualDubPortable\App\VirtualDub\plugins\WMV64.vdplugin"
: %1 is not a valid Win32 application.