what he means is get the 2 files have errors and post then AKA attach them to this site so we can fix them or try this http://www.smfhacks.com/packageparser/package.php
it's a packageparser it will tell you step by step if you need to install the CSS manualy I hope that helped and don't worry the packageparser was created by Daniel15
Yah I had theses problems to so use the packageparser to install the code manualy to the 2 files that fialed the test trust me I did that and it works but since your manualy modifing the php files it's a good idea to make a backup just in case.
that package parser is very goood .....
but the thing is when i find those giving words .... i found 2 lines with same code ... thats why i got confuced..... bcoz i didnt kno which to to edit ....
but i really like that package parser ... coz it helped me alot ... wid other mods...