I have found this post, where Stas explained how to use a diferent .mo file (for example, spanish translation) into SholarPress Courseware:
Stas said 1 year, 11 months ago:
"I can see the errors gone now.
About translations, there was a bug: I forgot to update the path to translations, the constant was obsolete.
Here’s the modifications I did in courseware.php
Also, rename the translation file into bpsp-da_DK.po/.mo, I used this textdomain because it was shorter, and it’s much cleaner to read the code."
But the link above is broken and I can´t see the solution.
What can I do?