Not sure what you'd like for logs but here is one, it happens everytime I click preview, and when I can get to streaming, when I click stop stream is crashes too.
Code:
14:37:22: Settings::Video: Enabling Aero
14:37:24: Open Broadcaster Software v0.592b - 32bit (´・ω・`)
14:37:24: -------------------------------
14:37:24: CPU Name: Intel(R) Core(TM) i5 CPU 760 @ 2.80GHz
14:37:24: CPU Speed: 2793MHz
14:37:24: Physical Memory: 4095MB Total, 1516MB Free
14:37:24: stepping id: 5, model 30, family 6, type 0, extmodel 0, extfamily 0, HTT 1, logical cores 4, total cores 4
14:37:24: monitor 1: pos={-1440, 0}, size={1440, 900}
14:37:24: monitor 2: pos={0, 0}, size={1680, 1050}
14:37:24: Windows Version: 6.1 Build 7601 S
14:37:24: Aero is Enabled
14:37:24: -------------------------------
14:37:24: OBS Modules:
14:37:24: Base Address Module
14:37:24: 01050000 OBS.exe
14:37:24: 61980000 OBSApi.dll
14:37:24: 65570000 DShowPlugin.dll
14:37:24: 65930000 GraphicsCapture.dll
14:37:24: 61750000 NoiseGate.dll
14:37:24: 61730000 PSVPlugin.dll
14:37:24: ------------------------------------------
14:37:24: Adapter 1
14:37:24: Video Adapter: NVIDIA GeForce GT 220
14:37:24: Video Adapter Dedicated Video Memory: 1026031616
14:37:24: Video Adapter Shared System Memory: 3220779008
14:37:24: Video Adapter Output 1: pos={0, 0}, size={1680, 1050}, attached=true
14:37:24: Video Adapter Output 2: pos={-1440, 0}, size={1440, 900}, attached=true
14:37:24: =====Stream Start: 2014-01-13, 14:37:24===============================================
14:37:24: Multithreaded optimizations: On
14:37:24: Base resolution: 1440x900
14:37:24: Output resolution: 1440x900
14:37:24: ------------------------------------------
14:37:24: Loading up D3D10 on NVIDIA GeForce GT 220 (Adapter 1)...
14:37:24: ------------------------------------------
14:37:24: Audio Format: 48000hz
14:37:24: Playback device {0.0.1.00000000}.{188564f7-6432-48ae-8d75-b4e342383926}
14:37:24: ------------------------------------------
14:37:24: Using desktop audio input: Stereo Mix (Realtek High Definition Audio)
14:37:24: ------------------------------------------
14:37:24: Using auxilary audio input: Microphone ()
14:37:29: ------------------------------------------
14:37:29: Audio Encoding: AAC
14:37:29: bitrate: 128
14:37:29: Using graphics capture
14:37:29: ------------------------------------------
14:37:29: device: Logitech QuickCam Fusion,
14:37:29: device id \\?\usb#vid_046d&pid_08c1&mi_00#7&368e8fa6&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
14:37:29: chosen type: I420, usingFourCC: false, res: 640x480 - 640x480, frameIntervals: 333333-2000000
14:37:29: use buffering: false - 0, fourCC: 'I420'
14:37:29: audio device: Disable,
14:37:29: audio device id Disabled,
14:37:29:
14:37:29: Using directshow input