Rebuild and re-sign the x86 driver... previous attempt was somehow borked but this one loads on Win7/x86 fine.

ext/bin/tap-windows-ndis6/x86/zttap300.inf

@@ -44,10 +44,6 @@ Provider = "ZeroTier Networks LLC" ; We're ZeroTier, Inc. now but kernel mode ce
 %DeviceDescription% = zttap300.ndi, root\zttap300 ; Root enumerated
 %DeviceDescription% = zttap300.ndi, zttap300      ; Legacy
 
-[zttap300.NTamd64]
-%DeviceDescription% = zttap300.ndi, root\zttap300 ; Root enumerated
-%DeviceDescription% = zttap300.ndi, zttap300      ; Legacy
-
 ;----------------- Characteristics ------------
 ;    NCF_PHYSICAL = 0x04
 ;    NCF_VIRTUAL = 0x01