When I apply an Iray material that was bundled with the HanMei Hair color I get this error. I did a maual install, I am NOT using CMS:
2019-12-07 08:13:29.904 Invalid hierarchy for selected node(s) and "preset_hierarchical_material" type; no root(s) found.
2019-12-07 08:13:29.904 Error reading file, see log for more details.
2019-12-07 08:13:35.294 Iray [INFO] - IRT:RENDER :: 1.0 IRT rend info : rendered frame 0009 in 5.450517s, 0.2fps (internal: 5.386535s, 0.2fps, overhead 1.2%)
2019-12-07 08:13:35.310 Iray [INFO] - IRT:RENDER :: 1.0 IRT rend info : Scene graph manager init took 0.000s
2019-12-07 08:13:35.762 WARNING: ..\..\..\..\..\src\sdksource\cloud\dzcloudtasknotifier.cpp(178): Unexpected exception in contentGetByRelativePathAndFilename: Unable to connect to the database
2019-12-07 08:13:35.871 WARNING: ..\..\..\..\..\src\sdksource\cloud\dzcloudtasknotifier.cpp(178): Unexpected exception in CloudFIle::lookupFromDb: Unable to connect to the database
2019-12-07 08:13:35.871 WARNING: ..\..\..\..\..\src\sdksource\cloud\dzcloudtasknotifier.cpp(178): Unexpected exception in CloudFIle::lookupFromDb: Unable to connect to the database
[...Dozens of this entry repeating]
2019-12-07 08:13:36.027 WARNING: ..\..\..\..\..\src\sdksource\cloud\dzcloudtasknotifier.cpp(178): Unexpected exception in CloudFIle::lookupFromDb: Unable to connect to the database
2019-12-07 08:13:36.027 Invalid hierarchy for selected node(s) and "preset_hierarchical_material" type; no root(s) found.
2019-12-07 08:13:36.027 Error reading file, see log for more details.
2019-12-07 08:13:40.840 Iray [INFO] - IRT:RENDER :: 1.0 IRT rend info : rendered frame 0010 in 5.539693s, 0.2fps (internal: 5.477026s, 0.2fps, overhead 1.1%)
2019-12-07 08:13:40.856 Iray [INFO] - IRT:RENDER :: 1.0 IRT rend info : Scene graph manager init took 0.000s