I am currently stuck with a installation error and I was hoping that you guys would have some insight. The error is intermittent and seems to occur only in 10.7.

This is the error shown in the log:

ar 29 12:36:50 Vikass-Mac-mini installer[313]: PackageKit: Install Failed: 
Error Domain=NSCocoaErrorDomain 
Code=4 
"The file “Staging” doesn’t exist." 
UserInfo=0x7fcb2c422e20 
{ 
NSFilePath=/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/Cleanup At Startup/PKInstallSandbox-tmp/ChildSandbox.Ova4mX/Staging, 
NSUnderlyingError=0x7fcb2c439740 "The operation couldn’t be completed. No such file or directory" } 
{
NSFilePath = "/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/Cleanup At Startup/PKInstallSandbox-tmp/ChildSandbox.Ova4mX/Staging";
NSUnderlyingError = "Error Domain=NSPOSIXErrorDomain Code=2 \"The operation couldn\U2019t be completed. No such file or directory\"";
}