Error while create accounting

Hi All

While create accounting I got following error in logfile. Any1 know how to sesolve this error?

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Subledger Accounting: Version : 12.0.0

Copyright (c) 1979, 1999, Oracle Corporation. All rights reserved.

XLAACCUP module: Accounting Program
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Current system time is 04-JUL-2012 13:44:49

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**Starts**04-JUL-2012 13:44:49
**Ends**04-JUL-2012 13:44:50
An internal error occurred.  Please inform your system administrator or support representative that:

An internal error has occurred in the program xla_ar_acct_hooks_pkg.main.  Technical problem : Error encountered in product API for extract
An internal error occurred.  Please inform your system administrator or support representative that:

An internal error has occurred in the program xla_ar_acct_hooks_pkg.main.  Technical problem : Error encountered in product API for extract
+---------------------------------------------------------------------------+
Start of log messages from FND_FILE
+---------------------------------------------------------------------------+
04-JUL-2012 13:44:49 - Executing Unit Processor ...
04-JUL-2012 13:44:49 -