K, I'm frustrated.
Here's my code for 2 simple routines:
def testinit()I call testinit, all seems fine.
#First, lets try to save configuration information to the child.
#from me, to General Info Plugin, priority 1, type=1, ID = 765
cmd = Command.new(127,4,1,1, 765)
cmd.params_ = '40' # the device to set (40 is my office light)
cmd.params_ = '56' # the devicedata field  is Configuration
cmd.params_ = 'Testing' #Value to assign...
#ok, seems like testinit worked.. lets attempt to read the data back.
teststring = device_.childdevices_.devdata_
log('Device 40s config:' + teststring)
I call testinit2, and I get an error.