Macro cannot be found! means that you have made an error in the code. Maybe
left off an "End If" in a complex structure.

"fak119" wrote:

When I open an Excel 2ooo worksheet, the Macros do not work anymore!

Needless to say, that the answer was "yes" to the question whether Macros
should be allowed.

Also, no macros are assigned to the buttons I created.

I cannot create new macros, neither on the old worksheet, nor on a new one!