Sage 50 Cannot Open the database because the database engine reported an error.

Hi All,

I use Sage for 5 companies and all of a sudden I can't open one. The error listed above comes up. I checked the error log and this is what came up.

 InnoDB: Operating system error number 23 in a file operation.
InnoDB: Some operating system error numbers are described at
InnoDB: http://dev.mysql.com/doc/refman/5.0/en/operating-system-error-codes.html
InnoDB: File name .\ibdata1
InnoDB: File operation call: 'Windows aio'.
InnoDB: Cannot continue operation.

And I have no idea how to fix this error or what it means? Any help would be appreciated!