Yes. I've had the plugins installed for some time now. (haven't really used them much but i was getting used to them)
The error occurs at shutdown, i have not seen it at other times,
By active i mean they are loaded, in the list with a tick next to their name and the plugin itself actually works fine. (Tho i wouldn't know about send message, it was just on the list, i installed them all
Sorry if i was a bit vague before, hope this helps.