[#5336] - error while creating ad hoc view chart with column names in Japanese

Hi,

I got error while creating ad hoc view chart with column names in Japanese.
It works fine if just creating default chart type(i.e. bar chart) , but after I changed it to line chart and tried to add another category column, it says "An error occurred while performing the previous request."

Log file is attached. I am using JRS 6.1 pro.

Thanks.

Wei