Comment 5 for bug 143494

This error occurs because the LFS(LocalFileSystem)-Product does not work in ZOPE 2.8.1 as it should.
When i creat or change a LFS-File the Assertion-Error occurs.
Reading the a LFS-File is no problem.

(our website uses LFS for store/cache complete websites,
 own development)

LFS-function test:
1)
creating an LFS-Object via ZMI:
works

2)
update a existing Item/File in LFS via ZMI:
AssertionError,
but the File was correctly updated!

3)
create a new File in LFS via ZMI:
AssertionError,
but the File was correctly created!

4)
call objectItems of an LFS-Object raises no error,
but gives back an empty list, even though
the LFS-Object contains serveral items.

5)
Delete an item in the LFS-Object via ZMI:
works, without error

6)
access an Object/Items in the LFS directly via ID and read
its content:
works

The AssertionError can not be catched via try/except.