Yeah. I'm not sure if that fix was before or after the official 4.5 release. Its not hard to use cvs to checkout a copy of openacs. Take a look at the old Mac OS X Howto. It should have directions on how to do it. There is also a standalone document in openacs.org/new-file-storage on how to use cvs. I'm curious if this problem will persist...
It could be a incompatibility with the version of Postgresql you have and may need to be fixed again. We'll see.
Good luck,