cannot receive sms message with wm6 aku0.7

[jnjn]

helmi_c 1.0.4 works fine
wm6 aku 0.4.2 works fine with sms too

but aku 0.7 always shows this:
"The contents of this message cannot be displayed."

it seems when there are some symbol in the message that the phone does not recongnize, it will give out this message.

do not know why, maybe some reg mod will fix it?