Error: Runtime error - when clicking continue in a free event

After selecting the number of registrants for a free event and clicking the continue button a user may encounter an error in application runtime page.

Alternatively, you may see the following in the error logs:

Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
This error may indicate that the registrant and registrant count fields have been modified. 
  1. Edit the event registration form part
  2. Select the language tab
  3. Select the registration category
  4. Locate the registrant and registrant count field
    • The two numeric values should be {0} and {1}.
    • If either of these values are different replace them with 0 and 1. 
  5. Click Save

Steps to Duplicate

  1. Navigate to the event registration form
  2. Enter a quantity
  3. Click Continue
  4. Note: error occurs

Environment

 Blackbaud NetCommunity

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