Disk Warrior 2 & Norton. I'd recommend DW b/c my guess is it's a directory corruption. DW is designed specifically for that issue but in OSX I found Norton more effective to fix it & yes even in OS9 sometimes Norton can fix it. There are other utilities out there but. I'd recommend these two 1st. When you're moving files frequently off a HDD or partition then it does leave the way for some directory errors. But these errors are potentially hazardous to file recovery so fix them now. asap

Error 1799: http://support.allume.com/techsuppor...p?id=517&prod=

Rebuild your desktop for a start to see if that does any help: restart computer holding down apple & OPTION keys simultaneously.