After OS3.9 + BB1+BB2 install some progs won't load...

[amiga1260]

I think you should try to change your maxtransfer to this: 0x1fe00.

[amiga1260]

You have to use hdtoolbox. Start HDToolbox and click on advanced and go to the maxtransfer field and type then 0x1fe00. Save it and reboot it. Format your Workbench partion and install OS 3.9 and the boing bags.

If this doesn't help then go to devs directory and rename the following files:

AmigaOS ROM Update to AmigaOS_test

and

AmigaOS ROM Update.old to AmigaOS ROM Update