This feature is so awesome!
It worked all day for me, till i tried to show someone how awesome it was. At that point it popped this midway through:
0: STDOUT: PyQt4.uic.uiparser : DEBUG : new topwidget self.groupBox_5
0: STDOUT: PyQt4.uic.properties : DEBUG : setting property minimumSize
0: STDOUT: PyQt4.uic.properties : DEBUG : setting property text
0: STDOUT: PyQt4.
WARNING: msgLength is very large (1969840942) and is probably a garbage response.
WARNING: To avoid out of memory issues msgLength will be clamped to 10000.
timed out while waiting for data
And then stopped 
l