Big "Shout Out!" to whoever posted this fix...I have the basic version of ProSeries and had the same error message today.  I found the hb file just where the path showed, renamed it and then was able to start the program without a hitch.  The program then recognized that something had changed in the Homebase folder and had me run a routine to "fix" the problem, which it promptly did.  I'm back in business!