After install the latest k-lite codec, WMP can't use the hardware decode

Ching please help,

Just installed the latest k-lite codec pack, when I start the WMP 11 as usual, the hardware decode can't be activiated, but when using Window media classic can trigger the hardware decoding. Previously (before upgrading the k-lite) I can trigger both hardware decode for both player. please advice.
I am using Xp sp3, AMD Operon cpu and XFX GF9500GT