Hi,

I'm having a hard time starting MySQL 4.1.21

I get:
"Starting mysqld daemon with databases from /usr/local/mysql-4.1.21/var
STOPPING server from pid file /tmp/mysql.pid
061102 14:06:13 mysqld ended"

In the logs, i have:
"061102 14:07:25 mysqld started
InnoDB: Error: auto-extending data file ./ibdata1 is of a different size
InnoDB: 0 pages (rounded down to MB) than specified in the .cnf file:
InnoDB: initial 640 pages, max 0 (relevant if non-zero) pages!
InnoDB: Could not open or create data files.
InnoDB: If you tried to add new data files, and it failed here,
InnoDB: you should now edit innodb_data_file_path in my.cnf back
InnoDB: to what it was, and remove the new ibdata files InnoDB created
InnoDB: in this failed attempt. InnoDB only wrote those files full of
InnoDB: zeros, but did not yet use them in any way. But be careful: do not
InnoDB: remove old data files which contain your precious data!
061102 14:07:25 [ERROR] Can't init databases
061102 14:07:25 [ERROR] Aborting"

Now, if i add the line
innodb_data_file_path = /usr/local/mysql-4.1.21/var/ibdata1:100M:autoextend

i get:
"061102 14:08:25 mysqld started
061102 14:08:25 InnoDB: Operating system error number 2 in a file
operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
InnoDB: File name .//usr/local/mysql-4.1.21/var/ibdata1
InnoDB: File operation call: 'create'.
InnoDB: Cannot continue operation.
061102 14:08:25 mysqld ended"

What's going on here ?
This never happened to me in years.

What is teh problem and how to solve it ?

Thanks in advance.

Mário Gamito