Unable to Add Statistics Modules

I have downloaded several statistics modules to install and I am unable to get any to take. The IM version of Statistics appears to require a package file, which is not included in the modules I downloaded. Upon searching the IM archives, I found posts which indicated that the IM version of Statistics is a beta version which is not compatible with most modules. Is this still the case? The beta version is 3.0 and it displays 2.1.5 in the ACP. I have tried packaging the modules by creating the missing modules/pakfiles directory and uploading the files therein, to no avail.