changing index_lms.html to index.html

I am having an issue where (inside my lms (skillsoft)) I am getting a blank screen as oppose to the content playing. I have been trying to trouble shoot this and so far, nothing works. My next step is to changing the index_lms.html to index.html and also the references in lmsmanifest.xml to reference index.html and not index_lms.html

Has anyone experienced a similar issue and if so, how was it resolved.

Thanks for your help

Garfield