PackageMaker: "Could not copy scripts" error

Hi !
Today a little article to give a tips on the buggy PackageMaker.
Sometimes, you get this "Could not copy scripts" on build, with no more information.
Most time it's due to a bad XML description in the pmdoc.

1) right click on your .pmdoc document
2) choose Show package contents
3) open 01xxxx.xml with a text editor (not the 01xxxx-contents.xml)
4) take a look to the "script" part
5) check the values of postinstall, preinstall are right (good path, relative (or not...)
6) correct the errors, save and open you .pmdoc
7) everything should be ok

Cédric