Not sure where we are Ariel.
I don't think there is need for googling as there are links in Moodle Documentation Mathematics page for the correct asciimathml package which includes d.svg for doing graphing, but that aside I am not sure what you are referencing when you say "this filter". Are you speaking of asciimathml? If you want to tell me the URL
from whence you got the package I will tell if if its the latest code.
As to "client" are you speaking of your browser? If so you do not need any driver. However, IE
does not support MathML without a plugin, MathPlayer. Is this an issue? I suppose so if you are using IE, but then if you are using IE there are lots of issues, but I am not going to launch into that discussion here..... MathPlayer is freely available.
I also recommend installing Math fonts for any student simply because it makes lots of things very simple. There are easy font packages for almost every platform (for windows there is even an msi file) and the STIX fonts will be along soon as well.
Please provide additional details and I will provide additional explanations.