# webutil config file path
WEBUTIL_CONFIG=C:\YourOracle_Home\forms\server\webutil.cfg
Add frmwebutil.jar, jacob.jar into Classpath
What do I need anymore?

OH, can you give me your mail or skype name, or ect... ? Because, if my issue not solve, I can contact you ^_^.

...My OS is Linux. It's worked in Window. But when I config webutil on Linux then get this error. What have I do ?

The form containing Webutil functions is being called from an inappropriate trigger. For example,
PRE-FORM, WHEN-NEW-FORM-INSTANCE ,WHEN-NEW-BLOCK-INSTANCE and POST-FORM

Also: Webutil_clientinfo.get_host_name , Webutil_clientinfo.get_ip_address , Webutil_clientinfo.get_user_name, WEBUTIL_FILE.FILE_SELECTION_DIALOG_INT,
CLIENT_TEXT_IO.fopen.

Failing, because it is placed in triggers that are firing before Forms instantiates.

When calling a form from a Menu or another Form, ensure that the Form is not called from any of these triggers:

PRE-FORM,
WHEN-NEW-FORM-INSTANCE
WHEN-NEW-BLOCK-INSTANCE
POST-FORM

You generally want to avoid triggers in the categories of PRE, POST, and WHEN type triggers.

Recommend calling the Form from other triggers such as WHEN-BUTTON-PRESSED.

NOTE: Although not recommended by Oracle nor guaranteed to always work, there are certain situations where this issue can be avoided with the use of timers. One can create a non-repeating timer with a short expiration time in the WHEN-NEW-FORM-INSTANCE trigger and then place the webutil code in the WHEN-TIMER-EXPIRED trigger.