Crash at address 0x00ad9f4b in module SaintsRowIV.exe

[Austrianski]

Hello and hi,
when I try to play SR4 the game crashes as soon as this copyright text right before the start screen is displayed. I get the "Saints Row 4 Inauguration Station has stopped working" error message and a steam "app already running" error message.

So far I've tried:
- de-installing mods
- verifying Steam-cache
- deleting appcache folder in steam folder
- playing in borderless windowed mode
- uninstalling (and reinstalling) the Inauguration Station
- updating video card drivers (they're apparently up-to-date already)

I already played for 14 hours without any issues with the highest settings. I would try to re-install SR4 but I don't want to lose my savegame.

Protokollname: Application
Quelle:  Application Error
Datum:  02.09.2013 15:08:22
Ereignis-ID:  1000
Aufgabenkategorie:(100)
Ebene:  Fehler
Schlüsselwörter:Klassisch
Benutzer:  Nicht zutreffend
Computer:  [my last name]-PC
Beschreibung:
Name der fehlerhaften Anwendung: SaintsRowIV.exe, Version: 1.0.0.1, Zeitstempel: 0x521e7af8
Name des fehlerhaften Moduls: SaintsRowIV.exe, Version: 1.0.0.1, Zeitstempel: 0x521e7af8
Ausnahmecode: 0xc0000005
Fehleroffset: 0x00ad9f4b
ID des fehlerhaften Prozesses: 0x221c
Startzeit der fehlerhaften Anwendung: 0x01cea7dd7b6f42ca
Pfad der fehlerhaften Anwendung: C:\Program Files (x86)\Steam\steamapps\common\Saints Row IV\SaintsRowIV.exe
Pfad des fehlerhaften Moduls: C:\Program Files (x86)\Steam\steamapps\common\Saints Row IV\SaintsRowIV.exe
Berichtskennung: bdfddf61-13d0-11e3-8ce0-10bf4884ddec
Ereignis-XML:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
  <Provider Name="Application Error" />
  <EventID Qualifiers="0">1000</EventID>
  <Level>2</Level>
  <Task>100</Task>
  <Keywords>0x80000000000000</Keywords>
  <TimeCreated SystemTime="2013-09-02T13:08:22.000000000Z" />
  <EventRecordID>22926</EventRecordID>
  <Channel>Application</Channel>
  <Computer>[my last name]-PC</Computer>
  <Security />
  </System>
  <EventData>
  <Data>SaintsRowIV.exe</Data>
  <Data>1.0.0.1</Data>
  <Data>521e7af8</Data>
  <Data>SaintsRowIV.exe</Data>
  <Data>1.0.0.1</Data>
  <Data>521e7af8</Data>
  <Data>c0000005</Data>
  <Data>00ad9f4b</Data>
  <Data>221c</Data>
  <Data>01cea7dd7b6f42ca</Data>
  <Data>C:\Program Files (x86)\Steam\steamapps\common\Saints Row IV\SaintsRowIV.exe</Data>
  <Data>C:\Program Files (x86)\Steam\steamapps\common\Saints Row IV\SaintsRowIV.exe</Data>
  <Data>bdfddf61-13d0-11e3-8ce0-10bf4884ddec</Data>
  </EventData>
</Event>

Thanks a lot in advance. I hope I have included all the required information.