We've just released VI Tester 1.1.1 on the VI Package Network. This release contains a fix for a minor bug that caused the VI Tester toolbar to not show up in the LabVIEW 2009 Project Explorer window.
You can download & install this package using VI Package Manager. Just press the "Check the Network for Available Packages" button to refresh your package list, then install the jki_labs_tool_vi_tester-1.1.1.137-1 package.