three things to try.
1. The "side-by-side" component is associated with the Vista Windows Resource
Protection (WRP). You may have a corrupted file in the SxS folder.
To resolve this issue, use the System File Checker tool (SFC.exe) to repair
these files.
To do this, follow these steps:
1. Open an elevated command prompt. To do this, 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/Continue.
2. Type the following command, and then press ENTER:
sfc /scannow
(The sfc /scannow command scans all protected system files and replaces
incorrect versions with correct Microsoft versions.)
This may take some time to run, so be patient.
2. Install the vcredist_x86.exe
http://www.microsoft.com/downloads/d...displaylang=en
3. Install msxmli.msi
http://www.microsoft.com/downloads/d...displaylang=en
or read some where this might work also, run UE3Redist file in the Binaries/Windows folder and it fixes the problem
keep us informed.