Igbinary_unserialize_header error?

Question

all of a sudden I started getting this error:

Warning: igbinary_unserialize_header: unsupported version: 538976288, should be 1 or 2 in ... 

Could not find anything on the network, or something is wrong in my code! This is probably serialized data. Any solutions?

Thanks.

EDIT:

The code is http://pear.php.net/package/Cache_Lite/redirected this package, I removed the serialize and unserialize functions and replaced them with igbinary_serialize and igbinary_unserialize . It works, but sometimes it’s not. just for certain serialized data, so the problem may be with data that is objects from mysql_fetch_object