Michel,
You might be interested in this solution:
http://www.oxwall.org/forum/topic/15550
Wilson,
Sorry to hear that your update didn't go well Wilson.
I have helped hundreds of people with their updates in past week and I
can tell that majority of all reported issues (about 70%) are connected
to third party plugins/themes which are not yet compatible with 1.6.
Only about 20% of issues turned out to be real bugs either within the
core platform or within our plugins. We are working on fixing all
reported/confirmed bugs. Updated plugins and fixes are on their way.
I understand your recommendation to hold on with the update. However
even if you wait for 1.6.3 with all the fixed bugs, you can't be 100%
that update will go smoothly.
Therefore I strongly recommend to start trying to update now. If you
don't want to do this on your live site, then make a full back of your
site>>install it somewhere in subfolder creating a testing
environment for updates. Try updating this test site, so that when you
are ready to update your live site you are prepared and know what you
are doing.