5.6 Upgrade Error

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Didn't have a single problem when testing the beta but with the first real project I'm trying to update, I get an error message when calling index.php/tools/required/upgrade/

Dictionary driver '/home/usr/customerXYZ/public_html/concrete/libraries/3rdparty/adodb/datadict/datadict-mysqlt.inc.php' not available
Fatal error: Call to a member function AddColumnSQL() on a non-object in /home/usr/customerXYZ/public_html/concrete/core/models/attribute/key.php on line 452


Please note the "t" in mysqlt.inc.php... I'll investigate further, just posting this in case someone else has the same issue.

I was able to update by calling index.php/tools/required/upgrade again. With the second try, there was no error..

Remo