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AR# 6366

V2.1i COREGEN, WINDOWS NT, 95, 98: Cannot start up Coregen on Windows NT-- application hangs after loading SizeRequirements.class


Keywords: coregen, start, windows, size, requirements, java

Urgency: hot

General Description:
Coregen tries to start up but just hangs at the point at which it is supposed
to be loading SizeRequirements.class (the information that it is trying to load
SizeRequirements is only evident if Coregen is invoked in verbose mode by
editing coregen.bat and adding a -v option to the jre.exe invocation line).

(To find out how to run Coregen in verbose mode, please refer to (Xilinx Solution #8532).


The problem is due to a conflict with a "JavaHome" setting in the Windows registry.
Coregen can only start up after this entry is removed.

Rather than remove the entry entirely, you may back it up by exporting it to a register

To edit the registry,

Go to the Start Menu and select "Run".

Type "regedit" in the field marked "Open:" and click OK.

Navigate to: HKEY_LOCAL_MACHINE/Software/JavaSoft/JavaRuntime Environment/1.1

Select the "JavaHome" register entry and select "Registry->Export Registry File..."

Save it to a name and location of your choice (suggested name is JavaHome.reg).

Finally, delete the register entry in the ... JavaSoft/JavaRuntime Environment/1.1 folder
and restart your PC (or simply log out and log back in if you are on Windows NT).

AR# 6366
Date Created 05/03/1999
Last Updated 08/29/2001
Status Archive
Type General Article