[Pyobjc-dev] tableview_willDisplayCell_forTableColumn_row_ failure

[<bo...@pa...>]

so, when i add the following method to my TableView delegate

     def tableView_willDisplayCell_forTableColumn_row_(self, aTableView, 
aCell, aColumn, rowIndex):
         print "tableview will display cell"

the run window shows:

    tableview will display cell
    Traceback (most recent call last):
      File "/Users/rbp/Documents/build 
projects/X.app/Contents/Resources/__main__.py", line 19, in ?
        sys.exit(AppKit.NSApplicationMain(sys.argv))
    objc.error: depythonifying 'char', got NoneType of -1

that last line is coming from ./Modules/objc/obj_support.m lines 853:855

the weird thing is that the print results show up in the Run window, so 
the
method must be getting called. commenting out the two lines, and the 
failure
doesnt happen.

any ideas?

thanks, bob