Hi Mylestro,
What specific SmartCard type are you using within ZAP (from the "Tools
- Options" menu, within the "Certificate" category, and specifically,
on the "PCKS#11" tab)?
If you are using one different from the ones currently provided inside
ZAP, be sure you are adding the proper DLL reference, meaning that you
must point to the one that has been developed for 64-bit Windows
systems.
As you can see in the previous Wiki reference provided by Simon, most
providers typically offer you two different DLLs, one for 32-bit and
one for 64-bit systems. In both cases you must use a 32-bit Java VM.
Cheers,
--
Raul Siles