Working great here too!! I had to restart the Mac after installing (fairly normal for AU at least) then I was able to start several of them no problem, works great. Thanks Arne for this, amazing support so long after it was discontinued, it’s still unique….
I have only Wivi Band, Wallander's stripped-down version of its modeling VIs. Stripped down, but still great... I use the Horns and Clarinet a lot. I wish I had purchased a broader range of these instruments back when we still could.
For the AU, restart after install worked for me, too. I'm running DP11.3 on an M1 Mac. Interestingly, PlugInfo (Mac app) shows a VST3 version with no other info except file size. When I ran Digital Perform (before the re-start), the VST3 showed up as available, and when I selected it, it was scanned by DP. But it did not show up as a VI option for an instrument slot once DP was running a project.
After the re-start, the VST3 was gone from DP's available VST3s, but PlugInfo still shows it. I wrote to Arne seeking info in this regard.
That said, the AU is working well in DP. PlugInfo shows it as Intel 32, Intel 64, PowerPC (hinting at its origins), dated 11/12/2018. The VST version has the same date. As noted above, the VST3 version is undated in PlugInfo. Despite the lack of Apple Silicon Native support, the plugin runs great as a Rosetta AU in DP Native.