Ok just removed every trace of CyberGraphx, rebooted, installed Picasso from the link above.
When installing I get this error when it's 75% done:
COPYFILES: Couldn't copy file "Picasso96Mode" in line 4421.
DOS Error Type: Not enough memory for installation to continue.
Which surprises me, I have more than enough chip and fastmem available.
When skipping that part (possible when running install again and deselect it) the error comes again with another file (a .readme one).
Apart from that the installation seems to complete (when deselecting certain things), but now I can't get it booted.
It boots, don't see anything, reboots. This loops.
I'll try removing the stuff again through the emergency boot disk.