Could someone please help me out with this:

I've just installed TLH and tried the SBE fix option.
When I use the 'Pad Files" function in the 'pad mode' - after I have done the 'Fix SBEs' - I get this error message in the Process Log:

'shntool: error: invalid mode or option: pad
shntool:
shntool: type 'shntool -h' for help'

Any idea what this means and how to fix it?