I am using Synctoy 2.0 under VIsta. I noticed it failed to copy certain files (mainly POwerpoint) and misses some folders occasionally. I use to Contribute mode.
Do you mean to say that these files are missed entirely and SyncToy gives you no warning about the fact that it is skipping these files? Do you use SyncToy in a GUI mode? Did you check to see if the link on top of the screen shows you that some files were skipped during sync? If you click the link - SyncToy will give you extra information on why it skipped the file.