In OS X Mavericks, Apple moved the setting required to enable "assistive devices".
Apple now treats this as a privacy issue and has placed it under the "Security & Privacy" section of Preferences under Privacy > Accessibility.
Enabling TextSoap Menu in the list allows it to work with other applications to provide its integration feature.
I've updated the prompts to clarify this.
Mac App Store:
- TextSoap 7.3.8, which addresses some Mavericks compatibility issues, is now available.
- TextSoap Menu 1.0.5 (with the new prompting) is submitted and will be available as soon as the update is approved.
- TextSoap 7.3.8 (which includes the direct version of TextSoap Menu) is now available. Use TextSoap's "Check for updates" menu option or download it at: http://www.unmarked.com/downloads/