The issue with the arrow keys not working still exists in 6.1.0.3.
Keyboard = 104-key US English
Host and viewers both running on Windows 7.
Host version = 6.1.0.3 , Viewer version = 5.6.0.6 = Arrow keys working :)
Host version = 6.1.0.3 , Viewer version = 6.0.0.4 = Arrow keys NOT working :!:
Host version = 6.1.0.3 , Viewer version = 6.1.0.3 = Arrow keys NOT working :!:
Host version = 6.0.0.4 , Viewer version = 5.6.0.6 = Arrow keys working :)
Host version = 6.0.0.4 , Viewer version = 6.0.0.4 = Arrow keys NOT working :!:
Host version = 6.0.0.4 , Viewer version = 6.1.0.3 = Arrow keys NOT working :!:
So it is clearly a bug which was introduced in the viewer after 5.6.0.6 and is independent of the host version.
While it is clear from the lack of fix and comments in this thread that you do not really have a handle on what the issue is, you should be able to look back through your source control system for any change after 5.6.0.6 which impacted arrow keys and revert that change.
Jeff
Edited:Jeff Parker - Mar 04, 2015 5:02:40 pm EST (Make not working case more obvious)