What kind of cracks....do you mean at the joints or in the stone tiles or pavers themselves?
Doug, what sort of stone is this? Are they just pavers and, if so, can you just replace the pavers? What sort on base are they sitting on top of? Some more information will help us to help you. :)
thes are cracks in the joints where base has settled. less than 1/8 in
pavers or stone Doug
the patio is of random size stone, not sure what kind.
Post a pic for us Doug!
if its cracks in the mortar joints of flagstone you can fix it by buying a bag of quickcrete mason mix in the green bag ih home depot or lowes and sweep it into the cracks (wait for a good dry day)
take out the surrounding mortar - pry up the offending flagstones - fill w/sand OR properly compacted GaDOT ('crusher run' 'base') - replace stone(s) - replace mortar jnts,,, if its less than 1/8" & NOT a trip hazard, find something else to worry about ;-)