msvcprtd.lib(MSVCP100D.dll) : fatal error LNK1112: module machine type 'X86' conflicts with target m

[EDN Admin]

I created a vs 2010 win 32 program (Operation system: Win 8-64bit)

Then, I tried to convert this win32 program in to x64 by doing like this:

Configuration Manager -> new solution platform (select x64) -> copy settings from win32

The vs2010 created a new x64 program based on the previous win32 program.

However, when I tried to compile and run the x64 program, there is a single error:
msvcprtd.lib(MSVCP100D.dll) : fatal error LNK1112: module machine type X86 conflicts with target machine type x64

I checked and found msvcprtd.lib is in $(VCInstallDir)libamd64. Moreover:

Library Directories -> Inherited values has included all the necessary directories (I think):

$(VCInstallDir)libamd64
$(VCInstallDir)atlmfclibamd64
$(WindowsSdkDir)libx64

My question is why the error report seems to tell me the program is still using the msvcprtd.lib in $(VCInstallDir)lib?

And, how to solve this problem?

Thanks in advance.

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