Hello,
I am stumped. I have a large VBA program with about 8 subroutines and
maybe 50-70 variables. The program itself is too complicated to
explain, however as a gross approximation, it works about like this:

Private Sub Main_Clicl()
for x = 1 to 1000
if x^2+10x+25 = 100 then
exit sub
next
cells(1,1)=x
End Sub

So, the program would search for an answer. Anyway, let's just say
that for this example, when I click on a button on the screen, I get
an answer in cells(1,1). So, I click it one time and I get the
correct answer; I click a second time and I get an incorrect answer.
I click again, and I get the right answer. And this pattern
continues.

I am not using any static variables. All my variables are global.
Can someone please explain what might be happening.

thanks