System error

error:  no such method '2' for component /_advertserve.html
context: 
... 
131:  <input type="text" class="searchtableinput" name="q" value="Google Site Search" alt="Google Site Search" onfocus="if(this.value == 'Google Site Search') { this.value = ''; }" onblur="if(this.value == '') { this.value = 'Google Site Search'; }" type="text">
132:  </form>
133: 
134:  <& '_calendar_small.html' &>
135:  <div class="rightColumnAd"><& '_advertserve.html:2' &></div>
136:  <div class="rightColumnAd"><& '_advertserve.html:3' &></div>
137:  <div class="rightColumnAd"><& '_advertserve.html:50' &></div>
138: