I had to open up a support incident for this but the answer from GP support makes me think that I should have the incident credited back to me since it was an installer issue. My machine is a Windows 7 Ultimate 64 bit machine, and for some reason the bootstrap installer kept trying to load the 32 bit dw20shared.msi. The support technician gave me these instructions:
[BEGIN SUPPORT TECH MESSAGE]
1. First, you will need to navigate to the folder where the setup.exe is for GP 2013. I would like you to copy the Watson folder out of the installation media and paste it into the C:\ root directory on the workstation. The Watson folder should contain three different files: dw20shared.msi, dw20sharedamd64.msi, and dw20sharedia64.msi.
2. Next, click Start > type in cmd and then right-click on the Command Prompt icon in the search results and then left-clicked on "Run as Administrator".
3. In the Command Prompt window, perform a change directory to the Watson folder:
cd\
cd C:\Watson
4. Next, you will need to execute the following command to install Dr. Watson for a 64-bit workstation.
msiexec /i dw20sharedamd64.msi APPGUID={91710409-8000-11D3-8CFE-0150048383C9} /qb+
If this run successfully, you should be able to go back to the setup.exe to finish the bootstrap installation
[END SUPPORT TECH MESSAGE]
He was right, it worked! I didn't see an answer from the thread starter, so I thought I'd post my answer here. This definitely seems like a problem with the installer.