@Will-i-am:
Might your Boing-Bag 2 perhaps be the OS3.5 Boing-Bag 2 as it asks you to install OS3.5 first?
Is it these two Boing-Bag archives the ones you have used?
BoingBag39-1.lhaBB3.9-2.lhaMake sure you extract them using the original
BB3.9-2.lha]Lha archiver/unarchiver. This as the OS3.9 Unarc has a bug not corrected until BB2 which results in incorrectly extracted Boing-Bags. If you have extracted your Boing-Bags using Unarc earlier, it might be the reason why the Boing-Bag 1 locks at 40%. In your Boing-Bag 2 case though when it asks you to install OS3.5 I suspect it is actually the OS3.5 Boing-Bag 2 you have and not the OS3.9 Boing-Bag 2.
Btw, when the system locks completely, like it does at 40% for you when installing Boing-Bag 1, try holding down Ctrl-Amiga-Amiga for more than 10 seconds.
I have a CSPPC in my A4000 running OS3.9 working fine. I have archived the 68040 and 68060 libraries from my system to
this archive. Just put these libraries from what archive in LIBS: on your CSPPC OS3.9 system and there should atleast not be any 68040/68060 library issues.
/Patrik