Hmm, are you using the 3.9-final-7067 image?
I just tried it again; the fix-pack loaded fine in about 10 seconds. r42Beta3 is definitely there, just installed it to be sure. Here's the URL to it if you want to hit it from you rbrowser.
http://map.squeak.org/accountbyid/c3993561-22fb-421f-b0be-c46b5487e105/files...
- Chris
magma@lists.squeakfoundation.org