p_util_fix

function fixPaintUtils()
    local tColourLookup = {}
    for n=1,16 do
       tColourLookup[ string.byte( "0123456789abcdef",n,n ) ] = 2^(n-1)
    end

    local function parseLine( tImageArg, sLine )
      local tLine = {}
        for x=1,sLine:len() do
          tLine[x] = tColourLookup[ string.byte(sLine,x,x) ] or 0
      end
      table.insert( tImageArg, tLine )
    end

    function paintutils.loadImage( sPath )
       if type( sPath ) ~= "string" then
           error( "bad argument #1 (expected string, got " .. type( sPath ) .. ")", 2 )
        end

        if fs.exists( sPath ) then
            local file = io.open( sPath, "r" )
           local sContent = file:read("*a")
           file:close()
           return paintutils.parseImage( sContent ) -- delegate image parse to parseImage
        end
        return nil
    end
end