I have downloaded blank_sidebox again and this time it is working

There is only one difference:
My first intent was to have two such instances and so I followed the instruction to change "replace all instances of blank_sidebox and BLANK_SIDEBOX" Perhaps this became the problem, I don't know.
Because I have no more time I decided to only use one sidebox. I will try more on my next project.

Although this sidebox now works, there is still one anomaly. Now there are two instance of the same sidebox!!!

At first I think perhaps there are two files the same so I check every folder. Then I make a test with the file that I know is good (tpl_blank_sidebox.php) and change some text. It shows up in both instance. So I know it is not two files but one file showing two times.

I have turned one file off in Admin and still it works ok.

It took a long time to fix and still I do not understand the fault, but it is working now and I am pleased.

Thank you for giving me so much of your time and expertise.

Ivanna