General Description: The following message may be seen when attempting to run the CORE Generator software:
"java.lang.NoclassDefFoundError: xilinx/widget/frame/PaneListener at at xilinx.xworks.builder.Xworks.main(Xworks.java)"
CORE Generator v1.5 gets its Java class definitions from $XILINX/coregen/lib/xilinx/xworks/builder
CORE Generator 2.1i Java class files are located in $XILINX/coregen/lib.
In the case of the error messages listed in this solution record, the location of PaneListener is specified as
The fact that this is a nonstandard location suggests that the software has not been set up properly.
- Verify that you do not have another version of JAVA installed on your machine. Each release of Xilinx CORE Generator ships with its own compatible version of JAVA. In the v1.5 release, the JRE version used was v1.1.3. In the 2.1i release, the JRE version is 1.1.5.
- The error may also be seen if you have manually edited the "coregen" script (UNIX workstations), or the "coregen.bat" file (PC's) and specified an inappropriate path to the COREGEN data files, the JAVA executable, or the JAVA class files. The paths to the JAVA executable and class files and the COREGEN data files are explicitly hard-coded into the "coregen" script on UNIX platforms and the "coregen.bat" batch file on PCs during installation. You should not need to edit either of these files.