ZD 2.0 beta3 Windows 2003 Server R2/ Windows XP SP3

Set Preferences->Login Options->Language = English (United States):
When open attached to email XLS or DOC file it opened and small "Downloads" window with file list appear.

Set Preferences->Login Options->Language = other then English (United States):
XLS or DOC file opens fine but there is error window (no "Downloads").
For Language = English (United Kingdom):
XML Parsing Error: undefined entity
Location: chrome://mozapps/content/downloads/downloads.xul
Line Number 55, Column 5:
<key id="key_findDownload2"
----^

For Language = Русский (Russian):
Ошибка синтаксического анализа XML: неопределённая сущность
Адрес: chrome://mozapps/content/downloads/downloads.xul
Строка 55, символ 5:
<key id="key_findDownload2"
----^

P.S. ---^ point to "<" before "key".

Same error on Polski, Italiano ...