building 64-bit static lib

I'm trying to update the ReadSaveJpeg library for 64-bit.  I created a new project, attached these files and set it up for a 64-bit build, all default settings (whose build options compiler defines are set to /DWIN32_LEAN_AND_MEAN).

The first attempt generated a *.lib file that was in fact still 32-bit though I was using the Release64 build output.  I know this because in my project that uses this library, CVI is graying out the file and considers it 32-bit:

outputted lib is actually 32-bit

So then I played with the build compiler options, guess on a /_NI_x64_. This resulted in a much larger lib file which was then properly identified as 64-bit:

However, compiling my main application with Release64 gives me either 32-bit warnings or "input file not a valid archive" errors.