TS2Ki: Floating point invalid numbers in calculation

[alex@xxxxxxxxxxxxxx]

I'm getting this inexplicable error. I add a strategy to my chart in 
TS2000i. The strategy contains 1 signal that doesn't do anything except 
initialize some variables and print some dates to the debug window. And 
yet, it generates an error "Floating point invalid numbers in 
calculation".
What's going on here?

Here's my signal:
=========================================
Inputs:
	peakspan(2),
	maxoverlap(0.25),
	maxlookback(60),
	TF2bars(0),
	TF3bars(0);

Arrays:
	TFbars[3](1);

Variables:
	tf(0), i(0), tlref(0), foundpeak(0), TLstart(0), TLend(0);

if CurrentBar <= 1 then begin
	TFbars[0] = 1;
	TFbars[1] = TF2bars;
	TFbars[2] = TF3bars;
	ClearDebug;
end;
for tf = 0 to 2 begin
	if TFbars[tf] > 0 then begin
		print("begin ",date);
		print("end  ",date);
 	end;
end;
========================================

It used to be a lot bigger, but the above is what I end up with after 
commenting everything else out. I don't understand where the error is 
coming from.
Anyone else ever seen this?
-Alex