I just spent the afternoon doing a clean OS3.9/VT4000 4.3 install on my newly assembled A4000T (Picasso IV, CS MKIII 060, VT4000). Both versions installed fine with this config and are working so far with a couple of exceptions.
Some of the older files installed from the NewTek CD overwrote newer system libraries and caused problems. Version.library 39.XX was one. I had done a back up of the OS3.9 install (prior to installing the VT software) so I copied the Libs: directory over the top again after the NewTek install and that fixed a lot of problems for me.
Since the onboard IDE controller seems to be problematic with Hard Drives on this machine I attached the CD-Rom as the only device on the IDE port with AsimCDFS and used an UW SCSI drive on the CS MKIII controller for the software install and all the files copied fine.
The VT4000 effects Icons on my system don't seem to be using the AGA colors as I have seen in some screenshots of other systems. They are all just grayscale on mine. The VT jumpers are set correctly. Can anyone tell me how to verify if the Toaster is using the AGA chipset? The screenmode I choose before running the switcher is NTSC 256 colors.
Thank You and good luck