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# 32082

Virtex-4 RocketIO Wizard - QPro device results in "Failed to generate associated files: nulljava.lang.ClassNotFoundException"


When using the Virtex-4 RocketIO Wizard to generate the appropriate wrapper settings to use the RocketIO in a QPro device, I receive the following error: 


"The following error occurred: Failed to generate associated files: nulljava.lang.ClassNotFoundException"


To work around this error, follow these steps: 


1. In the CORE Generator project settings, change the target device to a non-QPro Virtex-4 FX device of similar size. 

2. Generate the RocketIO Wizard with the appropriate settings. 

3. Change the target device back to the original QPro device to generate any subsequent IP. 


The outputs from the RocketIO Wizard generated for a normal Virtex-4 FX device use all of the same settings as the QPro devices and can be used without issue.

AR# 32082
Date Created 01/29/2009
Last Updated 05/23/2014
Status Archive
Type General Article