Seems to be a duplicate of

0000134: Cannot edit input channel weights on linux 64

See notes for that bug. Do they help? If so we'll close this bug.

The solution in 00000134 worked, so this is a dupe.

Duplicate of this bug:

0000134: Cannot edit input channel weights on linux 64

The same problem started again. I see the problem on amd64 ubuntu hardy herrin.

We must look into
(1) tracking down the problem (Sebastien is probably the only one that can do this)
(2) moving the list or otherwise modifying the GUI to work around the problem
(3) I will try adding a right-click command

Allow the user to right-click to edit the channel weights. Tested to work on mac and linux.