AR# 50973


System Generator for DSP v13.x, 14.1, and 14.2 - Produces an internal error message with a valid license file


System Generator results in the following error message on Windows 7:

"Internal error occurred in the Xilinx Blockset Library"

Why does this occur? Is there a work-around for this issue?


This is a known issue and affects System Generator 13.x, 14.1, and 14.2. This issue occurs on Windows 7 machines, both 32 and 64-bit, due to a handshake problem with the license call from System Generator to the overall ISE license mechanism. The problem occurs when a license file enters into the 30-day license subscription warning period and beyond. Prior to this period the issue is not seen.

If possible, move to ISE Design Suite 14.3 as the issue does not occur with System Generator 14.3. However, if this is not possible, then a patch is available for ISE Design Suite 13.1, 13.4, 14.1, and 14.2 to fix this issue in System Generator; these are attached to the end of this answer record.

If you experience any problems using these patches, or if they fail to resolve your issue, please open a WebCase with Xilinx Technical Support.

Please note that with the same license all other tools (e.g., ISE, PlanAhead) do not result in an error; this is strictly a System Generator issue.

Note: In the patch_readme file contained within the zip-files, the "root directory of the XILINX (Xilinx ISE installation)" refers to the following location $XILINX, which is equivalent to C:\Xilinx\<SW_Release>\ISE_DS\ISE.


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AR# 50973
Date 12/11/2013
Status Active
Type General Article
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