Foren / Cotonti / Support / Problem after inputting wrong type of variable

after inputting letters into the extra field which has integer as type, i can no longer add pages...  i get error 930 all the time

Added 2 days later:

i put cot_log in every step of page add and

cot_block($usr['auth_write']);

seems to be failing. there is only 1 user (admin) and this appeared right after this event