"Lorenz" example not working

[smarnach]

I just installed Envisage from the latest available Debian packages, version 4.0.0-1. The "Lorenz" example plots only once, and never updates the plot. The following exception is logged:

Exception occurred in traits notification handler for object: <acme.lorenz.lorenz.Lorenz object at 0xa23e3bc>, trait: time, old value: [  0.00000000e+00   1.00000000e+02   1.00000000e-02], new value: [u'0.0' u'100.' u'0.01']
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/traits/trait_notifiers.py", line 360, in call_1
    self.handler( object )
  File "/home/sven/tmp/Lorenz/acme/lorenz/lorenz.py", line 38, in _time_changed
    def _time_changed(self): self.refresh()
  File "/home/sven/tmp/Lorenz/acme/lorenz/lorenz.py", line 29, in refresh
    self.calculatePoints()
  File "/home/sven/tmp/Lorenz/acme/lorenz/lorenz.py", line 49, in calculatePoints
    self.timePoints = arange(*self.time)
TypeError: unsupported operand type(s) for -: 'numpy.unicode_' and 'numpy.unicode_'

I can make the example partly work by naively replacing the failing line with

self.timePoints = arange(*self.time.astype(float))

Other exceptions will still occur with this "fix" in place, though.

[smarnach]

I just found out this was fixed by commit 78282cde.