[ic] Help understanding error log entry: Safe: syntax error....

[DB]

IC 4.6.7 w/modified foundation

I created a new usertag and it seems to work as planned. However I'm now 
seeing new entried in my catalog's error.log. The lines from the error 
log look like this:

------ begin log snippet ---------

64.144.71.115 GwAaahqx:64.144.71.115 - [13/February/2003:09:56:39 -0500] 
MDS /cgi-bin/MDS/ord/basket Safe: syntax error at (eval 749) line 1, 
near ">"
 >
 > >0
 >

------ end log snippet ---------

And here's a section from  my ...templates/componenets/cart. I'm pretty 
sure that the first line causes the error because if I change the 0 to 
say a 5, I see "> >5" in the erorr log where "> >0" was before.

---- begin cart snippet ------------
[if type=explicit compare="[calc][scratch atvtotal noformat=1]>0 [/calc]"]
[and type=explicit compare="[calc][scratch atvtotal noformat=1]<25 [/calc]"]
  [then]
  [discount ENTIRE_ORDER] $s + 4 [/discount]
  [/then]
[/if]
---- end cart snippet ------------

This atvtotal variable gets defined in my user tag like this:
$Scratch->{'atvtotal'} = $atvtot;

As I said, eveything seems to work but I want to get rid of these error 
log enties. Can anyone spot my error or tell me how to debug?

DB