Hi,
Going back to dev_GetLicFeatureData API call, the reason it does not work is that flexlm component used does not support 64-bit host libraries. So cant make call into to it in this case to get the same info with 64-bit from flex libs since there are none. So until time comes that changes are made with the license implementation this one will not be available for the time being at least on the windows side.
The part I heard about change for that call were for XMS product on the Linux side which runs on top of HMP 4.1. Which does not help your case.
As far as FAX goes, I have not seen anything for adding 64-bit support in that case for that one.
Jeff