Arnold + Forest Ivy Error in 3ds Max 2025/24

[DanielB]

Hey guys!
I'm getting an error when trying to load an ivy preset with arnold, even though the file exists:

Error loading portable material library from  \AppData\Local\Itoo Software\Forest Pack Pro\lib\ForestIvy\Climbing Plants\matlibs\climbing_plants_arnold.pmat

LOG:
Warning: could not get Paramblock 0 from Materialwith ClassID(7e73161f,7ffd6281)
Warning: could not get Paramblock 0 from Materialwith ClassID(7e73161f,62f74b4c)
Warning: could not get Paramblock 0 from Texmapwith ClassID(7e73161f,461fb78c)
'fp_hedera_helix_leaf_front': error setting parameter with ID 82
Error: could not convert 'Material' with ClassID(7e73161f,62f74b4c)
'fp_hedera_helix_leaf': error setting parameter with ID 0
Error: could not convert 'Material' with ClassID(7e73161f,7ffd6281)
'fp_hedera_helix': error setting parameter with ID 0
Error: could not convert 'Material' with ClassID(200,0)


I uninstalled the climbing plants library, and installed it again.
Like it was suggested here:  https://forum.itoosoft.com/forest-pro-beta/error-loading-style-from/
It didn't help.

It's the same in 2024 and 2025
Other renderers work fine.

[iToo]

Hi, we just fixed the problem. It was caused by a last minute change.

Please run Update Manager, and download the Climbing Plants update.