Unable to Load Web Client Pro in Safari - KB Article #2155Related Articles --
Issue: Unable to Load Web Client Pro in Safari.
Cause: Oracle Java is installed for MAC OSX, which causes this issue. Oracle Java is only for Windows Operating Systems.
Resolution: For MAC OSX, Apple supplied Java should be installed/updated.
Refer to KBs:
Installing Oracle Java for FTP Voyager JV and Web Client Pro
Java for OS X 2013-005: How to re-enable the Apple-provided Java SE 6 web plug-in and Web Start functionality