Ive encounter this before but i manualy delete this guid in the database.

@caragadatacenter - Read this page: http://docs.elgg.org/wiki/Should_I_edit_the_database_manually%3F. I've sent you this link multiple times. Please stop telling people to edit their databases manually.

@Alan - We all deal with users every day and no one disagrees with you that it's frustrating. Development of a large project like Elgg means our small team has to triage features and bugs. If you have specific changes you want to see and need them right now, the best way for that to happen is to send a pull request on github.

sorry but that was before ive a learned a lot from mistakes @Alan plz. refer to the link given by @Brett