same problem
I'm having the same problem, there is nothing in the actual log, but i copied this off the debug log, it just does this through the whole battleground.
[10:33:59 AM:65] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:33:59 AM:204] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:33:59 AM:469] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:33:59 AM:591] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:33:59 AM:856] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:33:59 AM:963] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:00 AM:258] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:00 AM:410] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:00 AM:673] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:00 AM:783] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:01 AM:53] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:01 AM:211] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:01 AM:622] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:01 AM:799] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:02 AM:137] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:02 AM:322] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:02 AM:616] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:02 AM:783] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:03 AM:92] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:03 AM:215] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:03 AM:472] [Navigator-WalkPath (WSG.mesh)]: GeneratePath failed!
[10:34:03 AM:604] Path to <1506.449, 1459.445, 349.7054> could not be generated! - From: Styx
[10:34:03 AM:736] Thread was being aborted. - From: mscorlib