http://bugs.winehq.org/show_bug.cgi?id=23908
--- Comment #2 from Andrew Eikum aeikum@codeweavers.com 2010-08-05 08:57:54 --- Created an attachment (id=30018) --> (http://bugs.winehq.org/attachment.cgi?id=30018) regedit: Improve importing of REG_SZ with invalid quote characters
This patch will fix it. The commit mentioned in the bug report exposed this bug later in the codepath.
It's worth noting that the reg file you uploaded is invalid; it doesn't actually import anything on native regedit either. I'm not sure where you sourced it from, but it might be worth telling them about the error.