Write1 cannot be executed for multiple frames.

[nkchokshi]

Traceback (most recent call last): File "<string>", line 1, in <module>
File "C:/Program Files/Nuke6.3v2/plugins\nukescripts\renderpanel.py", line 8, in render_panel
return nukescripts.showRenderDialog(_list, exceptOnError)
File "C:/Program Files/Nuke6.3v2/plugins\nukescripts\renderdialog.py", line 668, in showRenderDialog

d.run()
File "C:/Program Files/Nuke6.3v2/plugins\nukescripts\renderdialog.py", line 230, in run

nuke.executeMultiple(self._nodeSelection, frame_ranges, views, continueOnError = self._continueOnError.value())
RuntimeError: Write1 cannot be executed for multiple frames.

[tommy138]

Have you got a write node open somewhere, with a filename like Cleanframe.exr?
Change it to Cleanframe.%04d.exr or Cleanframe.####.exr