It is because my only laptop is the one from my company and they apply strict rules to protect as much as possible the computer from attacks…
Basically all directories other than the sub of my user are written protected… I need a special login to make any modification there, what is the case of installing software but should not be the case to just use them…
This is why I finally installed t3000 in my user document directory …
Split installed part and document would be just more standard dir windows application.