Text editor saving caused buffer overflow loop?

[Rot8er_ConeX]

Not sure if I am using the correct term.  All I know is I selected "save", my musiic continued playing but the screen froze.  Had to hold the power button for fifteen seconds just to turn it off, and then when I turned it on, the bootloader would freeze on the screen that says "boot ver. 6.0" or something along those lines.

So I use the hold-rewind-button trick to go to the original firmware (I'm on a Sansa e260 v1, by the way), and connect to the computer.  I find, within the ".rockbox" folder, a file with a really bizare name, something like "0.D+*3", but with that really tall plus-sign character rather than a regular plus sign.  I delet that file, not knowing what it is but knowing it wasn't there before, then decide to try to reinstall Rockbox.  RockboxUtil tells me my Sansa's in the wrong USB connection mode, so I unplug and fix the settings.  When I plug it back in, the mystery file is back, AND there's nothing else in the ".rockbox" folder.

I decide to try to delete the master ".rockbox" folder - after all, I'm not gonna lose anything I haven't already lost - but Windows won't let me, saying something about the device not being connected anymore.  I can rename the folder, I can put anything I want into the folder, but I can't delete it, and every time I disconnect and reconnect to a computer - no matter what USB mode I'm in - a new mystery file appears.  I have this feeling that if I can delete the folder - currently named "how can I delete this" - my problem will be solved and I can reinstall Rockbox (luckily I did a backup about a month ago and all I'll lose is my customized Boomshine.lua program).  But I can't delete the folder.