SAPGui for Java can not download to excel in Mac

Dear Expert ,

I have problem when I use SAPGUI for Java 7.30 (Version ID 073000040000) on my Mac with OSX 10.8.3 Mountain Lion.

I always failed when I want to download report to excel file or other format.

It's happened also when I want to upload file from my mac to SAP , for example : when I run LSMW with file from Mac.

The problem is , I can not select or defined where directory (mac directory)

Please help me what should I do , because it's not happened when I used version 7.20 in OSX 10.7.x

Thanks for attention and help

Cheers,

Danang