http://bugs.winehq.org/show_bug.cgi?id=15301
--- Comment #2 from Jeff Zaroyko jeffz@jeffz.name 2009-09-30 18:15:12 --- confirming still present in 1.1.30
The message which pops up:
0009:Call user32.MessageBoxA(00010032,00565540 "Invalid character in the tag name. Line 1, position 102.",00561d40 "Error",00012010) ret=00414f75