亚马逊MWS状态为绿色但仍有错误

First of all, Pardon me, I am new to Amazon Market Web Service(MWS)

I am trying user Order Library located Here

I configured the environment (.confic.php), and I started from checking Service status by running

..\MarketplaceWebServiceOrders\Samples\GetServiceStatusSample.php

and the status is

Green

, So Okay till now

When I try to run GetOrderSample.php after uncommenting approperiate Service URL, I get the following message

Caught Exception: Internal Error Response Status Code: 403 Error Code: Error Type: Request ID: XML: ResponseHeaderMetadata: RequestId: 86358a3b-71ce-430f-8f91-c69003de099c, ResponseContext: Iqs86qjYVpx1jNRKOWhe5dPKVNBBHDjMtjf1oDNY6LGB+PMi9NLWh9V3yOIndtwAl7lTC+OrePM=, Timestamp: 2012-07-14T19:05:36.954Z Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 294415152 bytes) in Unknown on line 0

I checked the documentation for the error code, But I was unable to find such error, googled a lot, but at failure,

I checked the error log over the hosting, the error log has the following entry that is related to my problem (I guessed it due the the same timee when I accessed the page)

[Sat Jul 14 08:05:37 2012] [error] [client dummyIP.36.36333] File does not exist: /home/myhomefolder/public_html/404.shtml, referer: http://mydomain.com/src/MarketplaceWebServiceOrders/Samples/GetOrderSample.php

BEFORE THIS

I tried the same from my local host, I was not successful there too

can anybody help me? can somebody help me resolve this issue?

thanks