FilePolling error for Excel document

there are 2 sheets in my excel document. in the 2nd sheet, there are some very complex Macro.
when i put it in my input folder for Filepooling, it go directly into the error folder.But when i delete the 2nd sheet in my document, the filepooling works fine.

I want to know it is a bug of webmethods?

Any comment is welcome !:slight_smile: :slight_smile: