Today I started an Microsoft Exchange to Google Apps migration for a customer, and was perplexed to find that the Google Apps Migration for Microsoft Exchange tool (hereafter GAMME) crashed as soon as I started a migration. The solution is simple, but a little perplexing.
At least up until the day this was written (12/07/12) GAMME will crash immediately after starting a migration if the local copy of Office is 64-bit. You will need to uninstall the 64-bit version if you have it installed and install a 32-bit version. There is no mention of this limitation on the download page for GAMME.
Itis possible to use one of Microsoft’s trial copies of Office, which is what I ended up doing.
This tool is much faster (in my testing) than the Outlook migration tool, which is great because I have found that tool to be quite slow and unstable.