I had 6.0.1000 installed on both.
Couldn’t see all files shared at win7 from my XP machine, so the problem should be in my XP.
I’ve installed 6.0.1044, rebooted, but still can’t see all 109 files, just 90 of them.
On both machines…??
Sorry :-[ updated to 1044 in my XP machine.
I see there is some relation between this failure and file name.
When my file is named “Mod 310 1T.txt” there is no problem
But when named “Mod. 310 1T.txt” (dot in 4th position), it’s not shown.
Crazy!
The program should be updated on the Win7 machine.
Better use not more than one dot in your filenames. 
Hehe, dots, colons and spanish characters, even double spaces, end users love windows! and I can’t fight them
Strange that this problem is not happening from a third machine running Vista.
Solved! 
Updated avast 1044 in my win7 machine, restarted it and all 109 files are shown.
Thank you all!
You’re welcome…!
Egrueda, Sorry for the delay in responding and not being clear earlier. I put 6.0.1044 on my Win7 machine. XP machine still has 6.0.1000.
You gave me the right clue. Thanks!