Potential bug reports should be posted in Report an Issue where the TS staff are more likely to see your post.
Turns out there is a workaround.
For whatever reason, the x32 version of the ODBC driver works, but the x64 version of the driver does not.
If the Filemaker group is interested in reproducing, let me know, I will provide more info.
What version of FileMaker are you using? The 32 bit version is what you are supposed to use for FileMaker 11 and older. I'm not sure if they produced a 64bit vesion for FileMaker 12 or not.