Try saving it to a different location this time, then try running it. If that doesn't work, can you try running the setup file with a "/E" command line parameter? It will generate a debug file called "C:\sbevents.txt" and will hopefully have the cause of the error in it. Can you send me this file once it is created? Thanks!
This issue can be resolved by disabling your anti-virus software during the installation. Some anti-virus software show a false-positive when the temporary files are extracted.