Which table was it that you deleted? Can you access anything else, except the list of forms?
The function _ft_cache_form_stats seems to be used to check for nr of submissions, sessions and other stats for a form.
You might try to use the System Check module (and more specific: the Table Verification) to check your table structure. Read more about it here:
http://modules.formtools.org/system_check/?page=index
Install the module from here: http://www.formtools.org/download.php
You can also read http://forums.formtools.org/showthread.php?tid=1861 to see if that thread helps.
The function _ft_cache_form_stats seems to be used to check for nr of submissions, sessions and other stats for a form.
You might try to use the System Check module (and more specific: the Table Verification) to check your table structure. Read more about it here:
http://modules.formtools.org/system_check/?page=index
Install the module from here: http://www.formtools.org/download.php
You can also read http://forums.formtools.org/showthread.php?tid=1861 to see if that thread helps.