sorry for not responding for a few days...
seems that the thumbnail view was the problem for part of it.
Do any of the files have really long names?
also, to find the thumbs file, you need to enable hidden files view. what you can do is:
open CMD.exe
cd driveletter:\
cd folder\folder (to where ever the files are)
dir /a:h thumbs.db /s
attrib -H path\thumbs.db (for eaach file)
del path\thumbs.db
see if that helps.