no AV updates since server updated to 24.4

I just discovered that my workstations aren't getting AV updates anymore since the zenworks server was updated to 24.4; it's not that the updates are failing or returning an error, rather the hourly update events simply aren't being triggered anymore, nor is the 4-hour agent update. 

Fortunately I still have my work-around from a year or so ago when a similar problem occurred, so I'm using a zenworks bundle to trigger "product.console /c Start Update" to get updates every hour

AV status is still being reported back to the zenworks server, so after doing a manual update and a zen refresh, zenworks reports the correct AV signature version.

anyone else seeing this?