SANPHU error

Hi
After unwrapping phase, I am getting the following error
Assembling tiles
Exceeded maximum number of secondary arcs
Decrease TILECOSTTHRESH and/or increase MINREGIONSIZE

I am using the following tile control parameters
NTILEROW 10
NTILECOL 10

ROWOVRLP 200
COLOVRLP 200

NPROC 4

TILECOSTTHRESH 500

Do I need to redo the entire unwrapping or I can fix this with a command in snafu?
Thanks
Sanjeev