Hi....Our office has recently installed the AC18 BIM Server module and we were attempting to upload our libraries to the BIM Server. We kept receiving messages that the Library upload had failed. We are running MACs in our office, most running Yosemite, and did find out that when a new folder is created it creates custom icons which may be causing this failure. As a work around, we created a container with our objects and successfully uploaded that to the BIM Server. The objects are there, we can use them, etc. But we can't refresh, delete, remove or do anything else to the libraries. All the buttons are grayed out and we receive the message "The library is only editable with higher Archicad versions". Has anyone else running Archicad on a Mac platform had these problems when uploading libraries? Thanks for your help.