How is the Tasker profile setup? Would you mind posting a description export of the Tasker profile?
http://tasker.dinglisch.net/userguide/en/faqs/faq-how.html#q
How to Export a Profile:
- Ensure that Menu / Prefs / UI / Beginner Mode is unchecked
- Go to the main screen
- Long-click on the thing you want to export
- Open the menu and select Export > Description
Based on the above commentary, it sounds like you might be subscribing to one of the attributes in SharpTools and then reacting to it in Tasker using the ‘Thing State’ event plugin. How is the momentary butting being pressed.
Edit: Have you considered using something like Pushbullet to directly send the SmartThings events to Eventghost? While I love seeing interesting use cases for SharpTools, I just wonder if going through SharpTools and Tasker is adding one additional hop that could be removed. (What if the phone dies or isn’t on the network when the events are triggered?)
It looks like there is an EventGhost Pushbullet plugin and there is a Pushbullet Notifier SmartApp for SmartThings.