Game crashing when talking to npc or opening contacts list
Try rolling back your driver. The newest driver causes issues with Geforce 6 cards and City of Heroes.
This problem pop up every month or so.
Video Device Name: NVIDIA GeForce 6150SE nForce 430
This chipset IGP has issues with CoH try using 197.45 nvidia drivers.
(I guess nvidia users need a safe drivers list too, pity I don't have old nvidia cards to test with. I just have the GTX 260 now)
H: Blaster 50, Defender 50, Tank 50, Scrapper 50, Controller 50, PB 50, WS 50
V: Brute 50, Corruptor 50, MM 50, Dominator 50, Stalker 50, AW 50, AS 50
Top 4: Controller, Brute, Scrapper, Corruptor
Bottom 4: (Peacebringer) way below everything else, Mastermind, Dominator, Blaster
CoH in WQHD

Thank you for the help guys, It seems to have worked. I will update this post if it happens again. I agree, they should have a safe driver list for Nvidia cards. I was about ready to stop playing this game. Now my SG base looks great and I can take all sorts of missions. I just wanted to thank y'all for the input since I know not enough people actually thank the ones who help them.
I have no previous driver to flip back to and mine freezes everytime i go to contacts try to change clothes talk to new contacts, I have paid guess when my sub runs out in March will not renew
Paragon City Search And Rescue
The Mentor Project
H: Blaster 50, Defender 50, Tank 50, Scrapper 50, Controller 50, PB 50, WS 50
V: Brute 50, Corruptor 50, MM 50, Dominator 50, Stalker 50, AW 50, AS 50
Top 4: Controller, Brute, Scrapper, Corruptor
Bottom 4: (Peacebringer) way below everything else, Mastermind, Dominator, Blaster
CoH in WQHD

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ok, my game keeps freezing up when I talk to an NPC or open my contacts list. it also freezes when I try adding items to my SG base. It is not an every time thing but about half of the time when I try to lvl or get a mission the game freezes up. This is what windows has to say about it.
Description:
A problem caused this program to stop interacting with Windows.
Problem signature:
Problem Event Name: AppHangB1
Application Name: cityofheroes.exe
Application Version: 1.0.0.1
Application Timestamp: 4ec5618b
Hang Signature: 1825
Hang Type: 0
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033
Additional Hang Signature 1: 1825ba9886de94f4385d0bf478629c54
Additional Hang Signature 2: 9cb2
Additional Hang Signature 3: 9cb288e5de586d4635faf4cf2a82f91e
Additional Hang Signature 4: 1825
Additional Hang Signature 5: 1825ba9886de94f4385d0bf478629c54
Additional Hang Signature 6: 9cb2
Additional Hang Signature 7: 9cb288e5de586d4635faf4cf2a82f91e
This is what the COH helper says :
---System information gathered by CoH Helper version 0.2.0.2---
DxDiag gathered at December 11, 2011 06:03 (-06:00)
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.110408-1631)
System Manufacturer: eMachines
System Model: EL1352G
BIOS: Default System BIOS
Central Processor: AMD Sempron(tm) 145 Processor, ~2.8GHz
Memory: 2048MB
.Net Memory Report: 826MB out of 1791MB available
Page File: 10183MB (1607MB currently in use)
C Drive: (Hitachi HDS721050CLA SCSI Disk Device) 324452MB out of 464550MB (69%) free
Q Drive: () zero-size drive
D Drive: (ATAPI DVD A DH16ABSH SCSI CdRom Device) zero-size drive
Windows directory location: C:\Windows
DirectX: DirectX 11
DirectX Diag version: 6.01.7601.17514 (64-bit version)
Display Notes: No problems found.
Sound Notes: No problems found.
Input Notes: No problems found.
Monitor:
Monitor's Max Resolution: (blank)
Video Device Name: NVIDIA GeForce 6150SE nForce 430
Manufacturer / Chip: NVIDIA / GeForce 6150SE nForce 430
Video Memory: 889 MB
Driver Version: 8.17.12.6658
Driver Date: 1/7/2011 9:27:00 PM
Driver Language: English
Sound Device Description: Speakers (Realtek High Definition Audio)
Driver File: RTKVHD64.sys
Driver Version: 6.00.0001.6045
Driver Date: 2/9/2010 9:28:22 AM
WMI Information
Motherboard Manufacturer: eMachines
Motherboard Model: (empty)
Motherboard Product: EL1352G
Motherboard Version:
BIOS Manufacturer: American Megatrends, Inc.
BIOS Name: Default System BIOS
BIOS Version: ACRSYS - 20100128
BIOS Release: 20100128000000.000000+000
Registry Information for Current User
Resolution: 1366x705
3D Resolution: 1366x705 (Not using renderscale)
Full Screen: No
Maximized: Yes
Screen Position: 0, 0
Refresh Rate: 60Hz
Vertical Sync Enabled: No
Physics Quality: None
Maximum Particles: 100
Max Particle Fill? 10.000
Physics Card Enabled: No
Anti-aliasing: Off
Anisotropic Filtering: None
Texture LOD Bias: Crisp
Water Effects: None
Bloom: 1.000 (turned off)
Depth of Field Enabled: No
Desaturation Effects (Sepia) Enabled: No
Shader Detail: Unknown (4)
World Texture Level: Unknown (3)
Character Texture Level: Low
World Detail Level (Vis_Scale): 0.500
Entity Detail Level: 0.300
Shadows Enabled: No
Shadow Mode: Disabled
Shadow Map Shader: Unknown (0)
Environmental Reflections: Disabled
Advanced Occlusion Settings: No
Ambient Occlusion: Off
Occlusion Strength: Off
Blur: Bilateral
Ambient Resolution: Performance
Gamma Correction: 1.000
Geometry Buffers (VBOs) Enabled: No
Suppression of FX When Camera Close Enabled: Yes
Close Suppression Range: 3.000
Show Advertisements: Yes
Audio Mode: Compatiblity
3D Audio: No
FX Sound Volume: 0.151
Music Sound Volume: 0.000
Show Advanced Graphics Options: No
Overall Graphics Quality: 0.000
Reverse Mouse Buttons: No
Save Login Username: Yes
Transfer Rate: Unknown bytes/second
Current Game Version: 2120.201110150045.1.0
Installation Directory: C:\Program Files (x86)\NCsoft\City of Heroes
Mod files in the Data directory
No modifications found