Warning issue?

[lgswe]

I finally got a new computer ( i7-2600k w/GTS 450 graphics card) and transferred my files and programs over using PCmover. After doing that I started getting a warning message when I shut down X3--"The master list cannot be saved. Unable to open the file C:\Documents and settings\Larry Sweeney\Chief Architect Premier X3 Data\master.mat for writing". I'm using Windows 7 Pro on my new computer and my old computer used Windows XP. Does this have something to do with the mismatching of files from one OS to another? If so, does anyone know how I can correct this and exactly what this warning means?
Also in the transfer I loss the pdf995 printer as a printer in X3 for converting my layout files to pdf. files. I have tried downloading Pdf995 from their website, but I can't get it to run. Has anyone else had this problem going to Windows 7? Probably a good part of my problem is that a understand very little about the "inner workings" of a computer ---just enough to get me in trouble, of which I am now in. Any help will be much appreciated. Thank you.