asp, page through.

Yo, I'm having problems with my search page. If you do a sample search it takes you to a page full of results. Then if you click to view any of the next pages you get the following error.
Microsoft VBScript runtime error '800a0009'

Subscript out of range: '[number: 0]'

/x/page.asp, line 228

Code- this is from line 217 to 239------------------------------------------------------->
string1=searchit

if not instr(searchit,"OR") and not instr(searchit,"AND") and not instr(searchit,"+") then
if request("type")="exact" then
string1=searchit
searchitt="SELECT * from " & dbase & " where (News LIKE '%" & trim(string1) & "%'"
searchitt=searchitt&" or Title LIKE '%" & trim(string1) & "%' )"
else
arr="yes"
searchstr=split (searchit," ")
maxcounter=ubound(searchstr)
string1=searchstr(0) //############ line 228

searchitt="SELECT * from " & dbase & " where (News LIKE '%" & trim(searchstr(0)) & "%'"
searchitt= searchitt&"or Title LIKE '%" & trim(searchstr(0)) & "%' )"
FOR counter=1 TO maxcounter
this=searchstr(counter)
searchitt=searchitt & " and (News LIKE '%" & trim(this) & "%'"
searchitt=searchitt & " or Title LIKE '%" & trim(this) & "%' )"
NEXT
mySQL=searchitt
end if
end if