Amidock problems -Solved

It is not the first time that adding some docky to Amidock that Amidoc is not appearing correctly.
I don'tknow any more how it happened (but still have the faulty /xml file but then the Amodock bar just did not appear any more.
I don't remember how i fixed it.

This time updating zztools and adding as suggested in the install Webreplay to Amidock i still have an Amidock var (of expected length) but only some webreplay item appears at the left side (opposed to the "edit" button.) No other icon appears.

Any suggestion how to fix this? Is there some xml testing program ?
=== editedI
I did use an online xml testing program. It did not find an error

Saving withSGrab the Amidock settings for a working .xml prefs file i did note that layout/placement was set to "normal" wheras in the nonworking prefs it was set to "always in background"
restoring it to normal the icons adpeared again.

I really don't see the utility of such a possibility, and wondering how it was set.