Try to use these methods for solving your problem.
Run System File Checker (SFC) tool scan and check if it helps.
Steps to perform a SFC scan:
a) Click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow
b) Type the following command, and then press ENTER:
[The sfc /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions.]
After the scan has completed, close the command prompt window, restart the computer and check.
Check the below mentioned link for further guidance on SFC Scan - http://support.microsoft.com/kb/929833
Check the Windows Installer Service.
a. Click Start Orb, in the start search box, type Services and press Enter.
b. Scroll down and find the Windows Installer. Double-click “Windows Installer” in the Services list.
c. On the General tab, make sure the service is started under “Service status”.
d. If the service is not already running, under Service status, click Start, and then click OK.
Unregister and re-register the Windows Installer
a. Click Start Orb, in the start search box, type MSIEXEC /UNREGISTER, and then click OK .
b. Click Start Orb, in the start search box, type MSIEXEC /REGSERVER, and then click OK . After you run this command, the operation is complete.
c. Now, try your installation again.