IE7/jQuery reports error after upgrade from 5.x-1.6

After installing the upgrade IE7 reported an error in line 40 in jQuery, which corresponds to a filter function -- in the below code the line if(m[1]==":"&&m[2]=="not")r=jQuery.filter(m[3],r,false).r, debugging reports that m is null and t was ".0,.0".

filter:function(t,r,not)
	{
		var g=not!==false?jQuery.grep:function(a,f)
		{
			return jQuery.grep(a,f,true)
		};
		while(t&&/^[a-z[({<*:.#]/i.test(t))
		{
			var p=jQuery.parse;
			for(var i=0;i<p.length;i++)
			{
				var re=new RegExp("^"+p[i].replace("S","([a-z*_-][a-z0-9_-]*)"),"i");
				var m=re.exec(t);
				if(m){if(!i)m=["",m[1],m[3],m[2],m[5]];
				t=t.replace(re,"");
				break
			}
		}
		if(m[1]==":"&&m[2]=="not")r=jQuery.filter(m[3],r,false).r;
		else
		{
			var f=jQuery.expr[m[1]];
			if(f.constructor!=String)f=jQuery.expr[m[1]][m[2]];
			eval("f = function(a,i){"+(m[1]=="@"?"z=jQuery.attr(a,m[3]);":"")+"return "+f+"}");
			r=g(r,f)
		}
	}
	return{r:r,t:t}
}

I disabled my own jQuery functions, Google Analytics, and the problem persisted. It went away after rolling back to 5.x-1.6. Other Javascript-dependent modules installed include tinymce. Thanks!