Hello fellow Kaseyains!
I have created and posted a new VSS repair agent procedure at http://www.squidworks.net/2011/11/kaseya-scripts-repair-vss-writers-on/
Pretty simple script set, you can use it as a point and shoot script to repair a VSS issue or as a triggered script pulling from event logs or other monitors.
I hope this helps someone out there
Does this fix VSS writer problems without rebooting? Or is a reboot still required in most cases?