Error "Hyper API: regex_error(error_stack)" When Creating an Extract

Published: 25 Feb 2020
Last Modified Date: 26 Feb 2020


When creating an extract on Tableau Desktop, the following error may occur:

Hyper API: regex_error(error_stack): There was insufficient memory to determine whether the regular expression could match the specified character sequence.


  • Tableau Desktop 2019.4.2
  • Windows
  • Packaged workbook (.twbx)


To troubleshoot this issue, carry out the following steps in Tableau Desktop:
  1. Under the File menu, save the workbook as a .twb file.
  2. While on a worksheet tab, right-click the data source > Extract > Remove > Just remove the extract > OK.
  3. Re-create the extract.


The extract that is currently linked to the workbook cannot be found.
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