Controls error

M

MH

Hi,
I`m using 2 combo boxes in a worksheet to select various
options. These works correctly until I add formulas to
the sheet (such as Dsum or SumIf) to calculate data that I
have in another worksheet, based on the "link cell" of the
2 combos. About 99% ot the times (after I have entered the
first formula) Excel crashes (Excel has generated errors
ad will be closed by Windows).
This is trange as few weeks ago I have built a similar
sheet an it was working correctly.

Hope somebody can help me,

Regards,
 
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