Cinema 'Export Now' exports incorrect float (recolorable) images

Float images exported contain only Nan values.

Attached is a folder containing files to run the following test, which shows the bug:

float_bug.zip

• open ParaView
• load small.csv
• close the table view window that is created
• add TableToStructuredGrid filter, setting the following:
  • Whole extents to 0,1 0,1 0,0
  • 'X column' to x
  • 'Y column' to y
  • 'Z column' to z
  • Coloring to 'scalar'
• Zoom so that the data fills the entire view (there is no background showing)
• run the test.xml script
• Change the 'Root Directory' field to export test.cdb to this test directory
• File->Export Now
• run uncompress script
  • this will produce one raw files:
    • uncompressed_scalar.raw
    • uncompressed_depth.raw
• run od -f uncompressed_scalar.raw
  • this shows that the resulting uncompressed image contains only NaN values