Altiverb 4 and Logic Pro

[aduan]

well , I have install the altiverb in Logic Pro , But every time I start Logic Pro , The AU manager will tell me that i must choose the folder contain the IR response for the Altiverb , I got some Altiverb IR file downloafding from the Altiverb offical web site and GOS IR files , but it seems that the Altiverb cannot read these IR files , can any one here give me a suggestion? thanks!