WorkPlace Tech menu disappears when an application is opened.
Lessons Learned articles #4099 and #3486 did not help.
Repairing and re-installing WorkPlace Tech and re-installing Visio 2007 did not help correct the issue.
Host pc was Windows 7 Pro 32-bit.
WorkPlace Tech 5.8.6 and earlier
An update to Adobe Acrobat Pro (done between May 12 and May 21, 2014) broke WorkPlace Tech 5.8.6 / Visio 2007.
The exact update number is not known at this time.
Remove the update from Adobe or uninstall Acrobat Pro.