HFSLIP checks the time the file was created (just see for yourself which date Windows is showing) and slipstreams the newest. HFSLIP can't check the version number.

If a.dll version 3.4.444 was created more recently than 3.5.5555 (which happens from time to time), 3.4.444 will be slipstreamed by mistake. Special exceptions already exist in HFSLIP but they only cover specific situations.


This will work:
a.dll version 3.5.5555 created on 12-January-2007
a.dll version 3.4.444 created on 1-January-2007

This works because 3.5.5555 has a newer date.


This will fail:
a.dll version 3.5.5555 created on 12-January-2007
a.dll version 3.4.444 created on 15-January-2007

This fails because 3.5.5555 has an older date.