Using: WoWRoster v1.7.3
PHP version 4.4.7
MySQL version 5.0.45

Parsing files

* Error while parsing PvPLog after 0 seconds

Is this file size too big to upload?
4.47 MB (4,694,016 bytes)

Might be, but I think there's a separate PHP-sourced message for that, it really shouldn't be trying to parse it in that case.

Probably, you're running into an open_basedir restriction. Ask your host to add your temp directory to the open_basedir allowed directories.