I have loaded 5.11.01, earlier I was having 5.11 with machining, & arc welding PP, but now I am not able to reload Machining Power pack,
That sounds strange, I have upgrade from 5.11 to 5.11.01 also, and the PowerPacs work fine.
Please make sure you have a station opened before you try to load Machining PowerPac.
If the problem remains, I recommend you uninstall Machining PowerPac and install again.
Its done,
Thanks a Lot
RA