hey winter,
i was testing and i saw that you disable this
HKLM\WIM_Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum\{031E4825-7B94-4dc3-B131-E946B44C8DD5}: 0x00000001
with the reagtweak. but 031E4825-7B94-4dc3-B131-E946B44C8DD5 is for Library. thats why library is removed from the open&save and left panel at explorer.
i think you wanted to remove this link:
http://www.sevenforums.com/tutorials/48123-user-folder-add-remove-navigation-pane.html
its:
HKEY_CLASSES_ROOT\CLSID\{59031a47-3f72-44a7-89c5-5595fe6b30ee}\ShellFolder
and
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{59031a47-3f72-44a7-89c5-5595fe6b30ee}\ShellFolder
for win64 bit