NSIS installer, Install greyed out?

Hi,

I've used NSIS to make a wee installer for some code which runs fine on everyone's PC bar one, on which the Install button within the installer is greyed out.

Anyone know why this might be?????

Many thanks,
David
😕

It the Install button is greyed, the directory is not valid.

Ta.

Turns out on this one PC they'd changed the permissions on the directory.😱