[Tex/LaTex] Apacite compilation errors

apa-stylebibliographies

I am using apacite package and can't get my bibliography to compile. I was using another style until now, which was working, but I need APA. Does it matter how I created the .bib file (I imported references from Google Scholar, and there are different citation styles there, I didn't always select APA), or will the display of the references be handled by the package no matter how the bib was generated? Some errors I get are "Case mismatch errors between keys" and "I couldn't open style file apastyle.bst". Partial example below.

\documentclass[12pt,twoside,a4paper]{book} 
\usepackage[english]{babel}
\usepackage{apacite}
...
\bibliographystyle{apastyle}
\bibliography{Bibliography}

Best Answer

The citation keys are case sensitive. Fixing them in all section of the document removed the error message. The 'I couldn't open file..' was like David Carlisle and Andrew Swann said due to using apastyle instead of apacite.