Error in replying the script


I recorded a script for Oracle applications 11i with loadrunner 9.10. it was not able to record the script with IE, so i choosen firefox. it's fine till recording part, but it could not replay it back.

The error which i faced is "Fatal Error -27074: Emulating a Netscape browser is not supported for a Virtual User of this type. Refer to "Run-time settings/Browser/Browser Emulation/User-Agent (browser to be emulated)". Aborting [MsgId: MERR-27074]"

Could any one pls help me out from this.