Found 2 things.
Invisible wall:
[3214.47] Log: Log file open, 03/15/13 17:00:16
[3214.47] Log: Dumping BugIt data chart at 2013.03.15-17.00.16 using build 8710 built from changelist 17437
[3214.47] Log: MapName: OBJ_LondonBridge
[3214.47] Log: Description:
[3214.47] Log: BugItGo -220.4334 -1969.3772 177.0213 -2214 -29060 0
[3214.47] Log: ?BugLoc=-220.43,-1969.38,177.02?BugRot=-2214,-29060,0
[3214.47] Log: ---=== GameSpecificData ===---
[3214.47] Log: Log file closed, 03/15/13 17:00:16
Bad clipping, it feels like there is some clue in the door.
[4038.88] Log: Log file open, 03/15/13 17:14:00
[4038.88] Log: Dumping BugIt data chart at 2013.03.15-17.14.00 using build 8710 built from changelist 17437
[4038.88] Log: MapName: OBJ_LondonBridge
[4038.88] Log: Description:
[4038.88] Log: BugItGo -1623.7059 2210.6941 -60.0126 -1094 19780 0
[4038.88] Log: ?BugLoc=-1623.71,2210.69,-60.01?BugRot=-1094,19780,0
[4038.88] Log: ---=== GameSpecificData ===---
[4038.88] Log: Log file closed, 03/15/13 17:14:00
[0485.38] Log: Log file open, 03/15/13 18:42:17
[0485.38] Log: Dumping BugIt data chart at 2013.03.15-18.42.17 using build 8710 built from changelist 17437
[0485.38] Log: MapName: OBJ_LondonBridge
[0485.38] Log: Description:
[0485.38] Log: BugItGo -1771.8047 2571.3535 -47.8593 -12639 -9869 0
[0485.38] Log: ?BugLoc=-1771.80,2571.35,-47.86?BugRot=-12639,-9869,0
[0485.38] Log: ---=== GameSpecificData ===---
[0485.38] Log: Log file closed, 03/15/13 18:42:17