The expiration of the York University Libraries license for RefWorks comes to an end on June 30th, 2015. Now is a good time to migrate your materials from RefWorks to Zotero or Mendeley. Migrating is straightforward, you won't loose any of your information and you don't have to be a techie to do it. Here are some useful tutorials that will help you understand how to work it out:
And feel free to contact a Reference Librarian if you need any assistance.