EndNote macros open a second Word2k window

A second Word2k window appears when I start  new word document. (see figure)

It looks as if a macro has not properly finished.

This second empty window does not appear if I start Word2k with /a option, of course, and if I start word with all installed macros inactivated it also does not appear. But if I allow a single exception for ‘Thomson  Reuters (Scientific) Inc.’ the second window is there again. According to word’s own macro manager, the only macros installed belong to ‘EndNote Cwyw.dot’. Therefore I believe it is a bug within that template.
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