Hi wywgk! Liko and I came across problems with hedit last year, you can see our troubleshooting in this post:
www.tbamud.com/forum/4-development/3846-hedit-crash
If it is the same problem (and it looks like it is) then it seems to be caused by write permissions on the help file, but it was inconsistent and I can't be 100% sure.
My advice would be this:
1.) Comment out the code that handles duplicate helpfile entries in hedit.c - it's lines 87-93 in stock.
2.) Recompile your MUD
3.) 'Copyover' or restart your MUD
4.) Use hedit to make a brand new entry, save this entry
5.) 'Shutdown die' your MUD
6.) Uncomment out the code from step 1
7.) Recompile your MUD
8.) Start your MUD and test hedit functionality
Hopefully hedit will now be working as intended