Windows installer has stopped working. File Msi

[Bonethewise]

I try to install things but most dont work and say the same message, I read the problem details and it sais this.Problem Event Name: APPCRASH
Application Name: msiexec.exe
Application Version: 4.5.6001.22162
Application Timestamp: 48080879
Fault Module Name: AcGenral.DLL
Fault Module Version: 6.0.6001.18165
Fault Module Timestamp: 490bce79
Exception Code: c0000005
Exception Offset: 000209b0
OS Version: 6.0.6001.2.1.0.768.3
Locale ID: 1033
Additional Information 1: e51a
Additional Information 2: 4c0d4d78887f76d971d5d00f1f20a433
Additional Information 3: e51a
Additional Information 4: 4c0d4d78887f76d971d5d00f1f20a433

please help

Version vista Home Premium

[JinaJ]

Well the reason for this error is corrupted system files or the windows itself. You should first try repairing the system files by running a System File Check to analyze and repair the same. At the Command Prompt, enter SFC /scannow and press Enter.

Let me know the results.