Bresink Temperature Monitor (free and extremely comprehensive) is compatible with the Retina`s iStat Pro has some issues, this thread helps to edit and return the functionality
https://forums.macrumors.com/threads/1407448/ all credit to Buduls:
Steps:
1. Locate your widget, it will be under /Library/Widgets or ~/Library/Widgets
2. Right click it and select: "Show Package Contents"
3. Open Wide.js or Tall.js file in some editor (Wide is for horizontal view, Tall for vertical)
4. Locate the line
WideSkinController.prototype.updateProcesses = function(){
var _self = this;
var exclude = "";
if(p.v("processes_excludewidgets") == 'on')
exclude = " grep -v DashboardClient | ";
if(p.v("processes_sort_mode") == 'cpu')
widget.system('ps -arcwwwxo "pid %cpu command" | egrep
"PID|$1" | grep -v grep | ' + exclude + ' head -7 | tail -6 | awk \'{print "<pid>"$1"</pid><cpu>"$2"</cpu><name>"$3,$4,$5"</name></item>"}\'', function(data){ _self.updateProcessesOut(data);});
else
widget.system('ps -amcwwwxo "pid rss command" | egrep
"PID|$1" | grep -v grep | ' + exclude + ' head -7 | tail -6 | awk \'{print "<pid>"$1"</pid><cpu>"$2"</cpu><name>"$3,$4,$5"</name></item>"}\'', function(data){ _self.updateProcessesOut(data);});
}
Change
"PID|$1" to
"PID| $1" (Add space before $ sign)
5. Save the changes
6. Remove widget and re-add it Dashboard, and it should be fixed or just restart the Dock with: killall Dock from Terminal.