SW2009 SP4.0 LIBRARY PARTS LOST THE DRIVE LETTER

I'm searching for a solution to the following situation:

Since I installed sp4.0 for 2009 I get a consistent error when I open an assy or drawing of my top assy.  It says it cannot find a library part, and would I like to search for it.  I have to search for it, otherwise all the library parts have the same problem.  When I search for it, the path and file name show up in an "open file" type window, except the drive letter (and colon) is chopped off.  I enter the correct drive letter then it loads the file correctly.  Subsequently loading library parts now know the right path and proceed as expected.  Unfortunately this happens everytime I open a new session of SW.

Thank you,

Dave

SolidworksAdministration