Running dotCover in 64 bits from VisualStudio

Is it possible to run dotCover in 64 bits?
Consider the MSTest compiled under AnyCPU

TestMethod]
        public void WhatBitness()
        {
            Console.WriteLine(IntPtr.Size);
        }

If one sets the local.testseting and Deployment.runsettings to 64 bits, and one left clicks on the test, the result is
   8  <- running under 64 bits
if one now left clicks and selects Cover with dotCover, the result
   4 <-  running under 32 bits

Is there any way to make the dotCover run under 64 bits.  This is a problem because the floating point roundoffs differ between 64 and 32 bits.

Thank you

-jam