ExcelImportExportPlugin doesn't catch a formatted search, so the spreadsheed is empty

Hello,

I'm trying to use the ExcelImportExportPlugin. My first problem is, that when I use the Plugin like this:

%TABLE2EXCEL{}%

I get the following fault indication:

Foswiki detected an internal error - please check your Foswiki logs and webserver logs for more information.
Undefined subroutine &Foswiki::urlEncode called

What do I have to do?
So now I've found an alternative notation which works fine with a static table:

[[%SCRIPTURL{"table2excel"}%/%WEB%/%TOPIC%][Export to Excel]]

But when I use a formatted search to generate the table I get an empty spreadsheet. What went wrong?

Commenting is disabled while not logged in