I am so sorry this is such a late reply to your post. For some reason I missed a notification of your post and as I thought my problem was solved I have not looked at the topic until today.
The adjustment tab has the button to alter the levels on it. I moved this tab from it's docked position and then closed it. I then couldn't find how to get it back. Old Bruce showed me the way to restore it to it's original position.
I am such a newbie that I not only got the terminology wrong, I am still using the software as it came "out of the box" and have still not tried to arrange the layout into any other groups. I must confess I am finding this software a bit of a challenge but I'm sure I'll get there eventually.
Anyway, thanks for putting me right and hopefully other newbies will learn from my mistakes.
You're a star Callum.
I didn't think to keep on trying to download the apps but this time both Designer and Publisher have downloaded perfectly. However I did notice that the downloads are now 1.8.2 not 1.8. If I was a conspiracy theorist I would think Serif found there was a problem with 1.8 and within a few days issued a fix. Of course I didn't have notification of this fix as both apps where not on my computer. Anyway, thank you so much for replying to my request for help and being concerned enough to ask if all was OK.