I just upgraded from 1.17 smf with an old version of TP (can't remember which) however I had teh same issue.
BLOB/TEXT column 'illustration' can't have a default value
Looking at the database columns (in the table 'smf_tp_articles') I found that there was a default value set to "0" and it was an int(11) data type
I changed it to a BLOB and removed the default value and set it to NULL
This allowed the installation to continue with no obvious problems.
I would like to know what the correct data type is supposed to be, etc.
It worked - but if its supposed to be an Int(11)
I would like to change it back ASAP