[rules-users] drools-ant task and decision tables

Hi, does the drools-ant task know how to compile (.xls) decision tables, or does it only compile .drl (and .brl, .xml etc.) files? I'm having a bit of trouble getting it working, it keeps giving me the "Unable to load dialect 'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel'" exception (anyone know what's up with that, as far as I know that class is there along with all the required jars)? I'm trying to determine if it's worth my time trying to resolve the error (I can't use the ant task if it doesn't support decision tables). Regards, M.