problem of las 5.0 in redhat 7,0

Dear LAS users

Thank you for your support.

We have our LAS server 5.0 runnig in redhat 7.0

http://202.184.30.8/las/main.pl

It looks working very well at a glance.

but for exmaple when we choose the "tline" of "Sea Surface Temperature Monthly Mean at Surface" in "Coads 1-degree Standard" there and choose slect time range 1960-1970 (full range is 1960 - 1997), then error come up

The region you chose is too small

Please try again after selecting a larger region.

..............................................

This is "tline" graphy so this error shoud not come up. The point must be accepted.

In case of full range from 1960 to 1997, it is working very well outputing time series graph without any problem.

Could you tell me how to solve this problem?

Regards

Takaya Namba