I appreciate this is an old plugin but is there any way to get the presets to appear in Cubase Pro 8.5?
Not quite sure what you mean by get the presets to appear…did you install HalionOne or not?
Yes I did install it.
The solution: to install Cubase 5 (to get the presets) and then https://www.steinberg.net/en/support/knowledgebase_new/show_details/kb_show/installation-of-halion-one-presets-in-cubase-6/kb_back/2020.html?tx_p77sbknowledgebase_pi1