No... the problem was that I copied the Installer files to a floppy. That didn't work.... Even with the correct floppy name.

I had to mount the disk image and install it from there.

And yes...then a successful installation is also only possible with extensions off.

The adapter is working fine now for several days. I noticed that the PowerBook and adapter work better under System 7.5 than under 7.1.

My web server responds even when screen is almost off and HD is off. It wakes up and serves a page.....