Problems after truncate on POT tables

I've made a fresh install of phpOpenTracker with merge tables. After 
some successful tests I truncated all tables to reset the tracker.

Now I have the problem that the simple_report doesn't show any 
statistics. I've checked the database. pot_accesslog is empty. There are 
only entries in pot_accesslog_200406. The same thing applies to 
pot_visitors and pot_visitors_200406.

What can I do to get the simple report working again?

Thx
Peter



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