If you get the following text with a dual language site at the bottom of the page, it means that your language file for your second language is not complete.
This code does not exist in the English language file, so even if you have the whole file translated you will stll see this at the bottom of the page for multi page articles.
Go to > language > cy-GB > cy-GB.ini > add the follwing code anywhere on the page (bottom is good):
# Translation of Page 1 of 2
JPAGE_CURRENT_OF_TOTAL=Page %s of %s
Remember to translate “Page” and “of”.
Hope this helps.