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AR# 22812

8.1i CORE Generator - ERROR: Error loading L&F: java.lang.NullPointerException

Description


When opening an IP Core customization GUI from Core Generator or from Project Navigator, the following error occurs:



ERROR: Error loading L&F: java.lang.NullPointerException

ERROR: Error loading L&F: java.lang.NullPointerException

java.lang.NullPointerException

at javax.swing.MultiUIDefaults.getUIError(Unknown Source)

at javax.swing.UIDefaults.getUI(Unknown Source)

at javax.swing.UIManager.getUI(Unknown Source)

.

.

.

Solution


This error has been seen in JAVA applications on some computers after the Windows desktop theme has bee altered.



Try resetting your windows theme to the default.

1 - Go to Windows desktop, right click, and bring up Properties

2 - Go to Themes tab

3 - Change theme to Windows XP



A similar java.lang.NullPointerException will be issued for other java based applications. See (Xilinx Answer 22813)
AR# 22812
Date Created 03/05/2008
Last Updated 09/07/2011
Status Archive
Type General Article