Blank line in MSCONFIG connected to error 148:3?

Install any Adobe CS4 product on a Windows OS and the software adds some number of Startup items to MSCONFIG including CS4ServiceManager, AdobeCollabSync and a blank line with no Startup file name or Command Line entry.

Until Adobe's products added those Startup items, I had no software loading from my MSCONFIG Startup group. The blank line was disconcerting so I unchecked it. That, apparently, triggered the dreaded "error 148:3" message about a licensing problem. That error can be resolved by running LicenseRecover.exe, a file available for download from somewhere on the Adobe.com site. However, as long as the blank line in MSCONFIG is unchecked, CS4 products will continue to not run and will continue to display the 148:3 error message.

So...what does the blank line in MSCONFIG do? What is it? How is it that Adobe can add an unnamed Startup item to MSCONFIG?

Jeff