... revert from 2.4 back to 2.3...
The Virtual File System, VFS, may need to be renewed/replaced.
For my testing purposes, I had to put HFS2.3 and HFS2.4RC into 2 different folders so as to prevent VFS trouble.
These may help:
HFS > Menu > Clear file system
HFS > Menu > Save options > Clear options and quit
Also, right click house icon, bind root to real folder (your new empty folder) and then don't add any virtual folders (use only real folders).
P.S.
I also reverted to HFS2.3, because HFS2.4RC does "please wait server busy" too much (can't adjust?).