Had this same problem - I have posted elsewhere here asking where Cubase records location of factory content for HalionSE and others . . .
No one seems to know - including moderators as they have not responded either . . .
Mediabay will not “send” the content to Halion.
It can see it - but content does not appear as a HalionSE selection.
Love to figure this out.
You CAN solve it by re-installing ALL your content. This, apparently, writes the location to some file somewhere that HalionSE reads . . .
Just make sure you put it in EXACTLY the same place - or you will end up with 2 copies of the content.
That was my version of the problem . . 2 swappable boot drives - 1 W7 and 1 Vista. The “pointers” on each of the HalionSE installs pointed to locations 1 folder off from each other on my “sounds” hard drive - my mistake. But now I’m stuck with 2 copies of content until I get this worked out . . .
Help?
Hugh