I'm having a similar issue. I've gone out to the Siege Ramparts and when I try to enter (using the "To Temple" entrance) again the game crashes.
This is the info in Windows EventViewer:
Log Name: Application
Source: Application Hang
Date: 29-03-2015 16:16:44
Event ID: 1002
Task Category: (101)
Level: Error
Keywords: Classic
User: N/A
Computer: Holger
Description:
The program PillarsOfEternity.exe version 4.6.1.54401 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Action Center control panel.
Process ID: 5910
Start Time: 01d06a2acdfb0585
Termination Time: 41
Application Path: E:\Steam games\steamapps\common\Pillars of Eternity\PillarsOfEternity.exe
Report Id: 3519a8dd-d61e-11e4-a29a-902b341e74e4
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Application Hang" />
<EventID Qualifiers="0">1002</EventID>
<Level>2</Level>
<Task>101</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2015-03-29T14:16:44.000000000Z" />
<EventRecordID>86978</EventRecordID>
<Channel>Application</Channel>
<Computer>Holger</Computer>
<Security />
</System>
<EventData>
<Data>PillarsOfEternity.exe</Data>
<Data>4.6.1.54401</Data>
<Data>5910</Data>
<Data>01d06a2acdfb0585</Data>
<Data>41</Data>
<Data>E:\Steam games\steamapps\common\Pillars of Eternity\PillarsOfEternity.exe</Data>
<Data>3519a8dd-d61e-11e4-a29a-902b341e74e4</Data>
<Binary>55006E006B006E006F0077006E0000000000</Binary>
</EventData>
</Event>