ACT 3 crash when loading Battlefront area.

Hi guys,

Tried this twice now, crashes all the time when loading Act 3 Battlefront area from Market Place with my lvl 32 ranger, tried changing texture resolution etc to no avail. Pack check is all good.

Steps...
1) When to market place with my lvl 32 ranger on Normal Default league, latest patch.
2) Killed a few mobs on the way.
3) Came across Battlefront area, clicked on door.
4) Game menu loads up the loading transition screen.
5) Heard a windows crash sound.
6) Alt tabbed to see what the error was.

Please see attached screenshot and text file (or at least let us upload to save me fucking typing it out <__<).

First dialog box is...

Unable to MapViewOfFile in MapChunk. Error Code: 8 Offset: 4054056960 Size: 13051272.

Microsoft Visual C++ Runtime Library

Program: C:...
This application has requested the Runtime to terminate it in an unusal way bla bla bla.

Please see text copyied and pasted below...

Problem signature:
Problem Event Name: APPCRASH
Application Name: Client.exe
Application Version: 0.0.0.0
Application Timestamp: 517daa90
Fault Module Name: wrap_oal.dll
Fault Module Version: 2.2.0.7
Fault Module Timestamp: 4b04488c
Exception Code: 40000015
Exception Offset: 00048441
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 2057
Additional Information 1: 245f
Additional Information 2: 245ff2d838f3865c871066525a4820c5
Additional Information 3: ad16
Additional Information 4: ad1633a3048ceb14df64af9a1e40e086

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So, any ideas? When can this be fixed so I can progress beyond Normal difficulty?

All the best.

Pissed off POE fan.