Xerces C 2.3.0: calling domcount from Vim doesn't work anymore

Vim
:!domcount %

Works in Xerces-C 2.2.0:

command.com /e:1500 /c domcount \foo\foo.xml
\foo\foo.xml: 17813 ms (24 elems).

Doesn't work in Xerces-C 2.3.0:

command.com /e:1500 /c domcount \foo\foo.xml

Fatal Error at file , line 0, char 0
Message: An exception occurred! Type:RuntimeException, Message:
The primary document entity could not be opened.
Id=C:\vim\vim61/\foo\foo.xml

Errors occurred, no output available