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Some options for you:
1) The best would be to upgrade your MySQL to 5.7.xx
2) If you can't try to follow
these instructions, i.e.:
a) you add to your my.ini file on your server this:
innodb_file_format = Barracuda
innodb_file_per_table = 1
innodb_large_prefix
b) replace in your /sql/mysql.sql file
all:
ENGINE = InnoDB;
with:
ENGINE = InnoDB ROW_FORMAT=DYNAMIC;
Let us know it worked for you...