We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 35824

CORE Generator - An error occurred while running Java (due to a different language OS)


When I attempt to generate a CORE Generator core, the following error occurs:

"Error occurred during initialization of VM
java.lang.Error: java.io.UnsupportedEncodingException: GBK
ERROR:coreutil:576 - An error occurred while running Java. Please examine the console or coregen log file for a specific IP related error.
For more information please search the Xilinx Answers Database for this error: http://www.xilinx.com/support
ERROR:coreutil - An Error occurred during Customization.
ERROR:coreutil:308 - If the error occurred during generation, the problem may be due to a failure occurring in xst. Please check the xst log file - available in the working directory.
Error found during generation."

The following error also occurs:

"ERROR:coreutil - Error occurred during initialization of VM java.lang.Error: java.io.UnsupportedEncodingException: Cp1255
ERROR:sim - Failed to generate 'FIFO'."


To solve this problem, you need to add the following environment variable:

JAVA_TOOL_OPTIONS = -Dfile.encoding=UTF8

You can do this by right-clicking "My Computer" -> "Properties", select "the Advanced" tab and click "Environment Variable". Click "New" for either System or User (it only matters if multiple people use the machine).

Enter JAVA_TOOL_OPTIONS for the name and "-Dfile.encoding=UTF8" for the value.

Alternatively, from the DOS prompt:

set JAVA_TOOL_OPTIONS=-Dfile.encoding=UTF8

AR# 35824
Date 12/15/2012
Status Active
Type General Article
  • ISE Design Suite - 12.1
Page Bookmarked