NRD Commercial and Industrial Buildings Pack 1 Missing Textures

Hi all. Complete new guy and from the UK too so hope you don't mind me asking here or if it is the right place to ask at all. I just found the above pack and installed and I come up with a few missing textures. What looks to be missing are a skylight, concrete and rusty texture possibly all off one sheet. It's a fantastic pack and ideal for my route and even with the missing textures there is still plenty I can use. I did put a search up for John Lippai but could find no posts of anyone else having this issue. Thanks for any help and for letting me aboard your forum.
Stephen.
Stephen.