USB booting :: mtoolsrc

I'm trying to run frugile_usb on a sandiisk 1gb usb stick. I get the following error when I run frugile:
"Total number of sectors not a multiple of sectors per track! Add mtools_skip_check=1 to your .mtoolsrc file."
Well I can't seem to find the .mtoolsrc file. Any help would be greatly appreciated.
Thanks,
Homer

Type this in:

echo mtools_skip_check=1 > /home/dsl/.mtoolsrc

and then run the frugal_usb again.

Same error after I enter:
echo mtools_skip_check=1 > /home/dsl/.mtoolsrc
The .mtoolsrc does have the "mtools_skip_check=1" in it also.

I got it working now I had to do the following:
echo "mtools_skip_check=1" >> ~/.mtoolsrc

original here.