JDumper…I CAN’T SAVE!

NOWDAYS,

I’m studying about network packet analysis.

I downloaded JpcapDumper and Using now.

But… just only one problem !

After analysis ,
If I click the save button on Jdumper,
although the save windows come out but!
it says
” Can’t save file “c:\”my computer path….””

so, I tried to do changing types of file(.txt
or doc ..etc) .

I think it’s not a type of file problem.

If you know about JDumper, please tell me
how to save this!