unable to load .sdb file

Hello,

I've got one weird issue with cadence. I am in the ADE-XL environment. When I try to load the corner setup by clicking on 'Click to add corners', Load Corners GUI shows up. 

However, it won't show any folder or sub-folder where the .sdb file is located (please refer to the snapshot in the attachment).  Any idea how to fix this issue?

I am using IC6.1.4.

Thanks

Syafiq