Unable to re-create tiles using TILECACHE-MAPNIK-PGSQL

EarIier I was able to create tiles for India using tilecache-mapnik-postgres.
After dumping more osm files in postgres using osm2pgsql it stopped creating tiles. I am not able to figure out what is happenning.
Please help.

I assume we ned any logfile from your chain tool to find any error.

Please tell us in detail what version of each program you are using.

And what is your datasource?

And what operating system do you use exactly?