I've been reading through the Diversa Annual report for 2015 and...

I've been reading through the Diversa Annual report for 2015 and noticed that the ~$30m in carried forward tax losses are not listed on the balance sheet. Furthermore in Note 14. Income Taxes, the following text appears:
The deductible tax losses do not expire under the current legislation. Deferred tax assets have not been recognised in respect of these items because it is not probable that future taxable profit will be available against which the Group can utilise the benefits therefrom.

Does this imply that the $30m+ carried forward losses can't be used by the current earnings streams? Somewhat concerning if this is the case...

That said, Slide 14 of this presentation states otherwise (from 2013):
http://www.diversa.com.au/sites/default/files/pdfs/announcement_25.09.13_-_investor_presentation.pdf

A little confused at the moment... any help is appreciated.