Msln program not found

Hi,

Run the Norton (got 360) Power Eraser tool, which found two threads, one in registry. Have cleared these using Power Eraser and now when I start my computer get message:

msln program not found skipping autocheck,

this shows on black screen for few seconds and then computer starts normally. Just curious what this is, does that prevent some essential check? How could that happen after runnign the Power Eraser? Can I get rid of it. Noted previous thread on this issue but did not see a solution there.    Thanks for any advise.