Once I install new version of WME i'll give it another try. I'm still using 1.8.1
Maybe it has to do with the fact that they are hidden files ?
Can you try to install TortoiseSVN , check out a folder with a WME proeject file, add it to a repository, and compile the packages ?
It happens in both my WinXP PC's so it isn't something local.
I'll try and recreate and get a screenshot.