Iconfactory today announced the release of IconBuilder 8.5.1 for Mac OS X. This latest update to the company’s’s professional Photoshop and Fireworks filter for creating icons on the Macintosh, fixes several important bugs including creating open/drop folder icons on Intel-based Macs, support for saving both compressed and uncompressed Vista icons simultaneously, and more. The update is free to registered users of IconBuilder and available now from the IconBuilder site. IconBuilder is priced at US$79.