Problem solved.

For the benefit of anyone else how is a novice (to HTML, PHP etc) just like me, here's how to fix it:

Problem:
"t" missing in the "Post Comment" button.

Solution:
Go to file /language/en-GB/en-GB.com_muscol.ini

edit the line: POST_COMMENT=Post commen ('t' is missing here)

Germi;
You may want to update your files.

Thanks for this, saved me a lot of time trying to find it :-)

Finding this file also means I can change the word Albums to Recordings and then organize it how I want it to be organised :-)

I.e. the discography showing

Albums

Singles

EP

Videos

etc..

Instead of the formats. Basically switching Format and Type round. Don't really want to specify if a recording is on CD or Vinyl, just that its an Album, Single, EP, etc..