To confirm you have a symbol which looks like an S not a *, as film is not often caused by lack of softened water but more by lack of rinse aid.
I assume you followed instructions as per page 19 of the manual, and filled the compartment up to the top with salt?
It may also be a case of needing to adjust how much salt is used by the dishwasher, which I can talk you through.
It is possible you may have dropped some salt in the dish washer when filling the compartment?
If there isnt any water in the bottom of the dishwasher it rules out a blocked drain, the cycle would have performed a rinse cycle, it could be possible that some salt crystals got into the sump when you topped up the salt, and a few rinse cycles should fix that. otherwise it sounds like the regeneration \ water softener has failed.
I would suggest you run the dish washer on a series of rinse cycles, place a up right container in the dish washer to collect the water and inspect it after each cycle and see if its cloudy or salty, let me know the results after 3 cycles.
This would suggest you need to strip the unit down, and potentially replace the water softener.
I would suggest this is done by an dishwasher engineer, as they will be able to test components as they go, your looking at around £50 for labour, and would think you are looking at around £50-100 in parts. If you provide me your postcode I can recommend somone in your area.
With regard to an alternative work around if you empty the salt out, and turn off the water softening feature (I can talk your through this) after about 10 rinses the water should become clear again, and that then means your using hard water to clean, depending on your area (south of England) hard water will cause a build up a limescale over the years and also reduce the effectiveness of your dishwasher soap, but clearly costs nothing to do.