TBarCode FAQ: Word Plug-In Not Visible in Word 2007
The following workaround can help to solve the problem with the disappearing toolbar in Word 2007: Close Word 2007. Rename or delete the file "TBarCode Add-In.dot". Win XP: C:\Documents and Settings\[YourUserName]\Local Settings\Application Data\TEC-IT\TBarCode9 Windows Vista: C:\users\[YourUserName]\AppData\Local\TEC-IT\TBarCode9 Start Word 2007. By doing so, a new .dot file should be created and the plugin should be visible again.