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AR# 12698

4.1i Project Navigator - When I open Project Navigator, a "...name _pn.exe" application error is reported

Description

Keywords: ISE, 4.1i, Project Navigator, start-up, Application Error, Windows NT, 4.0

Urgency: Standard

General Description:
When I open Project Navigator 4.1i in Windows NT 4.0, the following error is reported:

"OleMainThreadWndName: _pn.exe -Application Error
The instruction at "0x00742310" referenced memory at "0x0000000". The memory could not be "read" "

Project Navigator then closes.

Solution

If a previous version of ISE was installed on the machine, ensure that the registry settings are pointing to the correct (latest) installation of the tools.

To do this, bring up the Registry Editor window by going to Start -> Run, and entering "regedit".

This will open a Register Editor window in which you may change your settings as follows:

- Go to HKEY_CURRENT_USER -> SOFTWARE and check all instances of Xilinx, Synopsys, and FLEXlm to ensure that they point to the correct location.

- Then, edit the HKEY_LOCAL_MACHINE -> SOFTWARE, again checking all Xilinx, Synopsys, and FLEXlm references.
AR# 12698
Date Created 09/28/2001
Last Updated 08/11/2003
Status Archive
Type General Article