query not showing any data-urgent

hi experts

i ma facing this problem: i have created an ISH (services) infocube which i have loaded with data, when i do a 'display data' on my cube i can properly see the data, when i open the query designer or analyser though, even when designing the simplest of queries ie just a service and its billed quantity and value i get a 'No Applicable Data Found' message

it is not a matter of authorization i have full priviledges and i also have 4 other cubes on which i can create reports on normally

the data in my cube is available for reporting

if anyone could suggest something it would be appreciated as i am working on a strict deadline

thanks