after update to 7.2, findAllForType not working with filter

I just updated from 6.0.4 to 7.2 (targeting a venter 6.0 server). I also updated the vro plugin with the version found in the documents section here.

Basically when I run the code below it returns no results whereas before it found items. If I remove the xpath stuff it find a bunch of stuff.

var vDSList = Server.findAllForType("VC:DistributedVirtualPortgroup","xpath:name[starts-with(.,'"+networkToFindVds+"')]");

My hack wrong around (short of reverting) is to just pull null for the second parameter and then use a for loop to try and find what I need.

Is this a known issue?