I\'ve got a Workbook_Open event macro (and it\'s in ThisWorkbook) that doesn\'t always run.
I encountered the same problem, and I avoid it using the security settings. I use the options settings then confidentiality center, then "params of confidentiality center" (sorry but its a translation of the french version :-p) then "files approuved" or something like this. And add the file containing the excel workbook in. And its finnaly worked after that.
Looked everywhere and never find that solution.
Hope it'll help someone