Fellow Tablet PC MVP Craig Pringle points out a "gotcha" for developers working with the Ink Analysis API on 64 bit machines.
From the blog post
If you want to make use of the Ink Analysis API and you are developing on a 64-bit machine then make sure you set the target CPU to x86. The Ink Analysis assemblies only support 32-bit at this time.
If you forget to do this then when you build or debug the project on an 64-bit machine then you will get an error like this:
System.BadImageFormatException was unhandled
Message=" is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)"
Source="IACore"
Fortunately, fixing this is easy: just set the target CPU on the project properties to x86.
That should tide us over until the Ink Analysis API is ported over to 64 bit.