[pstricks] Parallelogram in trees

[Herbert Voss]

Antoine Cailliau schrieb:
> Hi,
> 
>> please provide minimal examples ...
> You're right. Sorry. I tried to minimize the example but whatever the
> line I remove, the error disappear.

Icannot test it:

! LaTeX Error: File `tweaklist.sty' not found.

this is not an example to test! Also it is not important for
the problem, that you redefine maketitle. This all is superflous.

Herbert