Problem with DTD in ant1.3b3

[M.A.Dunphy]

Hi all,

I've just downloaded the 1.3b3 release, and used the antstructure task to
generate the DTD file. When I run ant on our build file it fails saying:

C:\...\build.xml:714: Name tokens must not start with "+" characters.

This appears to be a problem with the generated DTD. Anybody know what the
problem is and the solution?

Thanks

Mick