If you're have ikernel.exe problems this is the reason: Symptoms Virus definition files provided by Symantec for Norton AntiVirus software are identifying the InstallShield Professional 6 script engine ( ikernel.exe ) as being infected with the W32.Nimda.enc(dr) virus. Cause This is a false positive by Norton AntiVirus. The ikernel.exe script engine file contains no virus. This error with Norton AntiVirus has been confirmed by Symantec as an issue with their virus definition files incorrectly identifying the InstallShield Professional 6 script engine (ikernel.exe) as being infected with the above virus. Solution To resolve this issue with Norton AntiVirus you will have to do the following: Update the virus definitions for your version of Symantec Norton AntiVirus at http://www.symantec.com/avcenter/download.html Un-quarantine and restore the ikernel.exe and ikernel.ex_ files by following the instructions located at http://service4.symantec.com/SUPPORT/nav.nsf/docid/2001053109560706 Download the lastest updates for ikernel at: http://consumer.installshield.com/kb.asp?id=Q108312

thx................!