why wont D-force hair work properly for me?

Why won't D-force hair ever work properly for me? I am always able to load them up just fine and use morph styles but whenever I try to change the Iray materials colours I keep getting a message that pops up saying; 'an error occured while reading the file, see the log file for more details' and nothing happens. I always get it no matter what D-force hair I use. Other hair I use that is not D-force works just fine.
Any ideas on why this is happening? thx. I am using Daz 4.12 by the way.
Post edited by Drekkan on
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What does the log file say?
What do you have selected when you try to apply the materials? Most dForce hair I've seen comes with hierarchical materials, meaning that you need to have the figure selected, or maybe even the hair cap, but not the hair itself.
K from the log file:
2020-09-05 07:13:37.246 Invalid hierarchy for selected node(s) and "preset_hierarchical_material" type; no root(s) found.
2020-09-05 07:13:37.247 Error reading file, see log for more details.
2020-09-05 07:13:41.205 Invalid hierarchy for selected node(s) and "preset_hierarchical_material" type; no root(s) found.
2020-09-05 07:13:41.205 Error reading file, see log for more details.
2020-09-05 07:13:50.786 Invalid hierarchy for selected node(s) and "preset_hierarchical_material" type; no root(s) found.
2020-09-05 07:13:50.787 Error reading file, see log for more details.
any idea what this would imply? to answer Gordig I tried selecting everything.
K I see what I did wrong I did not have the hair attached to anyone so now the textures work ok. Strange though I don't really understand why this would need to be?! oh well. Thx guys :)
Yeah, Hierarchical Presets can be tricky sometimes. I'm glad you got it worked out! :D