Comment 3 for bug 191772

Ted, this is still not fixed in rev 17576:

If I use Close button to close dialog, I can then open the same extension dialog again. But if I just click the X button in the title bar, next attempt to call the extension does nothing - the window does not show. Only restarting the program fixes this.

Also, (at least) Add nodes extension fails - does not see its parameter. Add dimensions also does not work. (These may be unrelated to your bugs, if so let me know and i'll resubmit them separately)