Error in install Ehp6

hi experts,

error

The step syb_step_install_database_software with step key |NW_ABAP_OneHost|ind|ind|ind|ind|0|0|NW_Onehost_System|ind|ind|ind|ind|onehost|0|NW_CreateDBandLoad|ind|ind|ind|ind|createdbandload|0|NW_CreateDB|ind|ind|ind|ind|createdb|0|NW_SYB_DB|ind|ind|ind|ind|SYB_DB_CONTEXT|0|syb_step_install_database_software was executed with status ERROR ( Last error reported by the step: Assertion failed: Unable to create ASE installer response file. Refer to trace file sapinst_dev.log for further information.).

how to solve it,

Regards,

Dinesh Kumar S