BW error with Excel 2007

Hi Expert,

I found some critical issues that in Excel 2007

1,

can not read 20000 records at one time, it will pop upan issue window with the error message "Client out of memory" , but it works well in Excel 2003.

2,

When I tried to open the other report it pop up another error message "The program will now terminate Please refer to the trace for further infomation",but it works well in Excel 2003.

Are there any experts can give some suggestions ?

Len