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AR# 24702

9.1i ISE - "ERROR:HierarchicalDesignC:66 - HdcC::HDProject::Open: Read top DU name failed. HDProject not loaded"

Description


An ISE project can be created and processed without errors. However, once the project is closed and reopened, Project Navigator issues HierarchicalDesign errors such as the following:



Message when opening ISE project.

"WARNING:HierarchicalDesignC:56 - HdcC::HDProject::Open: Reading an old version of the HD project file (0.0). Current version = 1.4

ERROR:HierarchicalDesignC:66 - HdcC::HDProject::Open: Read top DU name failed. HDProject not loaded."



Message during synthesis and implementation.

"WARNING:HierarchicalDesignC:56 - HdcC::HDProject::Open: Reading an old version of the HD project file (0.0). Current version = 1.4

ERROR:HierarchicalDesignC:66 - HdcC::HDProject::Open: Read top DU name failed. HDProject not loaded.

FATAL_ERROR:Xst:hdlreadxcf.c:275:1.18 - Problem opening the IHDProject. Process will terminate. For more information on this error, please consult the Answers Database or open a WebCase with this project attached at http://www.xilinx.com/support."

Solution


This error has been seen by several Xilinx customers and appears to be machine-dependant. In most cases, the customer was able to fix the problem by doing one or more of the following:

- Create a new project

- Clean up the Xilinx and PATH environment variables so that they only point to one version of ISE.

- Re-install the software. Customers have reported the problem fixed after 1) re-installing the current ISE version, 2) installing the latest service Pack, or 3) upgrading to the latest ISE version.



Although Xilinx Development was not able to reproduce the cause of this error, from designs submitted from customers, they were able to determine the part of the ".ise" file which was getting corrupted. With this information a fix was created and released in ISE 9.1i Service Pack 2 (9.1.02i).



If you receive this error in 9.1.02i or later after recreating the project, please submit a case to Xilinx Technical Support:

http://www.xilinx.com/support/clearexpress/websupport.htm


Please be sure to include the system information of your computer. This information can be obtained by running the xinfo executable in the %Xilinx%\bin\<platform> directory.





NOTE: This error is closely related to the following errors which are typically seen when using the same system and project.



When opening a project:

"ERROR:HierarchicalDesignC:48 - Can't open child registry section"

See (Xilinx Answer 25236).



When closing a project:

"ERROR:HierarchicalDesignC:46 - Can't open client storage area "/common/HierarchicalDesign" in project file '<project name>.ise'"

"ERROR:HierarchicalDesignC:40 - Failed to close Project repository. HDProject data may not have been properly written to the Project file"

See (Xilinx Answer 29765).
AR# 24702
Date Created 09/04/2007
Last Updated 10/12/2011
Status Archive
Type General Article